-
公开(公告)号:US2045384A
公开(公告)日:1936-06-23
申请号:US310735
申请日:1935-01-23
Applicant: WILLIAM GERB
Inventor: WILLIAM GERB
IPC: B31F1/07
CPC classification number: B31F1/07 , B31F2201/0733 , B31F2201/0738 , B31F2201/0743 , Y10T156/1007 , Y10T428/24562
-
公开(公告)号:US2148937A
公开(公告)日:1939-02-28
申请号:US9655536
申请日:1936-08-17
Applicant: WILLIAM GERB
Inventor: WILLIAM GERB
IPC: F16F15/023
CPC classification number: F16F15/023 , Y10T16/212
-