Photographic film cassette with dust collecting ridges,申请号US19910813924-传众专利搜索

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发明名称	Photographic film cassette with dust collecting ridges
摘要	A plurality of grooves are formed on upper and lower inside surfaces of a film passageway of a cassette shell. The grooves receive dust tending to adhere to the photographic film, and prevent the dust from entering a film chamber of the cassette shell in order to protect surfaces of photographic film from scratches.
申请公布号	US5271576(A)	申请公布日期	1993.12.21
申请号	US19910813924	申请日期	1991.12.27
申请人	FUJI PHOTO FILM CO., LTD.	发明人	KATAOKA, HIDEAKI
分类号	G03C3/00;G03B17/30;(IPC1-7):G03B17/26	主分类号	G03C3/00
代理机构		代理人
主权项
地址

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