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公开(公告)号：US2106457A
公开(公告)日：1938-01-25
申请号：US74557834
申请日：1934-09-26
Applicant: HY SIL MFG COMPANY
Inventor： ELI HYMAN
IPC: D03D15/00
CPC classification number: D03D15/00 , D03D15/0088 , D03D2700/014 , D10B2101/20 , D10B2201/20 , D10B2201/28 , D10B2501/00 , D10B2503/00 , D10B2503/02
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