发明名称 COMBINED DRAINAGE STOP-VALVE CONICAL STRAINER DEVICE
摘要 This invention relates to improvements in the art of conventional lavatory pop-up plumbing drain valves and comprises a removably disposed combined drainage stop-valve conical strainer configuration for drainage and seating, having baffle apertures in it's inclined wall permitting liquid waste water to pass, but preventing elongated solid waste objects from passing into the drainage system that could cause stoppage.
申请公布号 US3665526(A) 申请公布日期 1972.05.30
申请号 USD3665526 申请日期 1970.06.03
申请人 FRANK P. HOFFMAN 发明人 FRANK P. HOFFMAN
分类号 A47K1/14;(IPC1-7):A47K1/14 主分类号 A47K1/14
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