Document Type and Number:
Japanese Patent JPS5491170
Kind Code:
U
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JP2013200291 | SOUNDING SANDGLASS |
Application Number:
JP16640277U
Publication Date:
June 27, 1979
Filing Date:
December 08, 1977
Export Citation:
International Classes:
G04F1/06; (IPC1-7): G04F1/06