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公开(公告)号:US645660A
公开(公告)日:1900-03-20
申请号:US1899733458
申请日:1899-10-13
Applicant: BELL FRANK M
Inventor: BELL FRANK M
CPC classification number: E02F3/92
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公开(公告)号:US1056772A
公开(公告)日:1913-03-25
申请号:US1911601278
申请日:1911-01-07
Applicant: BELL FRANK M
Inventor: BELL FRANK M
CPC classification number: B64C2201/00
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公开(公告)号:US1200697A
公开(公告)日:1916-10-10
申请号:US1911659808
申请日:1911-11-11
Applicant: BELL FRANK M
Inventor: BELL FRANK M
CPC classification number: F42B10/64
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公开(公告)号:US1070576A
公开(公告)日:1913-08-19
申请号:US1911625015
申请日:1911-05-04
Applicant: BELL FRANK M
Inventor: BELL FRANK M
CPC classification number: B64C23/005
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公开(公告)号:US662110A
公开(公告)日:1900-11-20
申请号:US1898699660
申请日:1898-12-19
Applicant: WILLMA POLLACK , BELL FRANK M
Inventor: BELL FRANK M
CPC classification number: G03B15/0442
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