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公开(公告)号：US1016147A
公开(公告)日：1912-01-30
申请号：US1911622647
申请日：1911-04-22
Applicant: HEATH ARTHUR M
Inventor： HEATH ARTHUR M
CPC classification number: F16B39/04 , Y10S411/945
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公开(公告)号：US2374748A
公开(公告)日：1945-05-01
申请号：US44397642
申请日：1942-05-21
Applicant: HEATH ARTHUR M
Inventor： HEATH ARTHUR M
IPC: B60C23/04
CPC classification number: B60C23/0403 , Y10T137/8342
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