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公开(公告)号：US882034A
公开(公告)日：1908-03-17
申请号：US1906336077
申请日：1906-09-24
Applicant: WARD EDWARD J
Inventor： WARD EDWARD J
CPC classification number: B66C23/78
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公开(公告)号：US2043600A
公开(公告)日：1936-06-09
申请号：US41360929
申请日：1929-12-12
Applicant: WARD EDWARD J
Inventor： WARD EDWARD J
IPC: B41J7/90
CPC classification number: B41J7/90
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