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公开(公告)号:US2104813A
公开(公告)日:1938-01-11
申请号:US9149536
申请日:1936-07-20
Applicant: PIEPER CHESTER R
Inventor: PIEPER CHESTER R
IPC: B60H1/00
CPC classification number: B60H1/00471 , Y10S165/099
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公开(公告)号:US1973995A
公开(公告)日:1934-09-18
申请号:US43780630
申请日:1930-03-21
Applicant: PIEPER CHESTER R
Inventor: PIEPER CHESTER R
IPC: E02D5/80
CPC classification number: E02D5/803
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公开(公告)号:US1770233A
公开(公告)日:1930-07-08
申请号:US38772329
申请日:1929-08-22
Applicant: FRANK GILLETTE , PIEPER CHESTER R
Inventor: FRANK GILLETTE , PIEPER CHESTER R
IPC: G08B17/06
CPC classification number: G08B17/06
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