发明名称 Pilfer-proof precious metal filings collection box
摘要 A precious metal filings collection box for use by jewelers or other tradesmen is disclosed which provides a pilfer-proof system for collection of precious metal filings which fall from jewelry or other articles as they are worked. The collection box is shown as being part of a jeweler's bench pan and is formed of a box-like unit having a screen mesh top through which the filings fall, but the openings of the screen are too small to permit the jeweler's hand or finger to pass therethrough. A locked bottom drawer which collects the filings is provided to prevent unauthorized removal of the precious metal filings.
申请公布号 US4316645(A) 申请公布日期 1982.02.23
申请号 US19800152359 申请日期 1980.05.22
申请人 KORWIN, RICHARD M. 发明人 KORWIN, RICHARD M.
分类号 B25H1/12;B25H1/20;(IPC1-7):A47B88/00 主分类号 B25H1/12
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