Document Type and Number:
Japanese Patent JPS5531893
Kind Code:
U
Application Number:
JP11619378U
Publication Date:
February 29, 1980
Filing Date:
August 23, 1978
Export Citation:
International Classes:
E02B7/22; E02B7/26; E02B8/04; (IPC1-7): E02B7/22; E02B7/26
Domestic Patent References:
JP41005702A | ||||
JP37011182A | ||||
JP53108134B |
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