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公开(公告)号:US1970112A
公开(公告)日:1934-08-14
申请号:US62811432
申请日:1932-08-10
Applicant: HARTFORD EMPIRE CO
Inventor: WADMAN HAROLD A
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公开(公告)号:US1961894A
公开(公告)日:1934-06-05
申请号:US69422833
申请日:1933-10-19
Applicant: HARTFORD EMPIRE CO
Inventor: WADMAN HAROLD A , MCINTOSH HAROLD W
IPC: G05D23/27
CPC classification number: G05D23/27 , G05D23/1906
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公开(公告)号:US1961893A
公开(公告)日:1934-06-05
申请号:US68218233
申请日:1933-07-26
Applicant: HARTFORD EMPIRE CO
Inventor: WADMAN HAROLD A , MCINTOSH HAROLD W
CPC classification number: C03B3/00 , G05D9/12 , Y10T137/7306
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公开(公告)号:US1905534A
公开(公告)日:1933-04-25
申请号:US55304031
申请日:1931-07-25
Applicant: HARTFORD EMPIRE CO
Inventor: WADMAN HAROLD A
IPC: C03B5/027
CPC classification number: C03B5/027
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公开(公告)号:US1880540A
公开(公告)日:1932-10-04
申请号:US43237130
申请日:1930-03-01
Applicant: HARTFORD EMPIRE CO
Inventor: WADMAN HAROLD A
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公开(公告)号:US1793199A
公开(公告)日:1931-02-17
申请号:US34876129
申请日:1929-03-21
Applicant: HARTFORD EMPIRE CO
Inventor: WADMAN HAROLD A
IPC: C03B25/06
CPC classification number: C03B25/06
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