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JPS54153981A |
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JPS5439895B2 |
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JPS54163295U |
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JPS5436684Y2 |
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JPS54157505U |
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JPS54156985U |
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JPS5435730Y2 |
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JPS54135988A |
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JPS54132091A |
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JPS54145004U |
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JPS54137691U |
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JPS54134893U |
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JPS54133840U |
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JPS5496302A |
PURPOSE: To secure a high-efficiency selection of the low frequency to be used for the system of the underwater acoustic wave transmission, by applying the electric signal amplitude-modulated via the low frequency desired for wave transm...
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JPS5420812B2 |
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JPS5420811B2 |
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JPS5420810B2 |
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JPS5487371A |
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JPS5418088B2 |
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JPS5418087B2 |
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JPS5485291U |
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JPS5471665A |
PURPOSE: To provide the watch which is capable of controlling a plurality of other apparatus by generating and releasing the ultrasonic wave signals having been coded with specific codes according to the operations of a keyboard thereby ...
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JPS5474025U |
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JPS5472292U |
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JPS5410901Y2 |
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JPS5454328U |
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JPS5444531U |
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JPS549381A |
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JPS545420A |
PURPOSE: To prevent the production of erroneous receiving signals, etc. with a simple constitution by producing FM ultrasonic waves with a percussion type ultrasonic wave transmitter which supports a metal bar with an elastic material.
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JPS541471U |
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JPS5345082B2 |
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JPS5344668Y2 |
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JPS5338881B1 |
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JPS53124685U |
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JPS53123099U |
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JPS53109644A |
PURPOSE: To produce a cable hermetically containing optical fibers within a tubular object made of metal at high efficiency by fusion-welding the end of the bonding part of a metal plate protruding in flat plate form.
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JPS5394102A |
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JPS5392153A |
PURPOSE: To obtain underwater information in high reliability without distarbance of waves, surface stream, etc. by collecting the information via a buoy for maintaining predetermined depth under the water to radiate an acoustic wave int...
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JPS5399137U |
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JPS5399140U |
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JPS5393866U |
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JPS5381590U |
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JPS5318849B2 |
1412466 Controlling by sound SONY CORP 16 Oct 1972 [18 Oct 1971] 47634/72 Headings G4F and G4H [Also in Divisions H3 and H4] In a circuit for discriminating between sound or information signals and noise or spurious signals including a v...
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JPS5322716Y2 |
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JPS5364019A |
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JPS5320187Y2 |
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JPS5359259A |
PURPOSE: To provide the above-identified apparatus, in which a cleaner body is controlled through remote control with a supersonic signal wave at 20 KHz or above transmitted through a dust transfer duct, and which requires no particular ...
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JPS5319711Y2 |
A wireless remote control for a television receiver. The television receiver or controlled system is provided with means for receiving a remote control signal transmitted by a control transmitter. The television receiver may be controlle...
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JPS5361177U |
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JPS5359850U |
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