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公开(公告)号:US1562050A
公开(公告)日:1925-11-17
申请号:US42916920
申请日:1920-12-08
Applicant: A L POWELL POWER COMPANY INC
Inventor: POWELL ALVAH L
IPC: F01B9/04
CPC classification number: F01B9/047 , Y10T74/18176
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公开(公告)号:US1545925A
公开(公告)日:1925-07-14
申请号:US67385623
申请日:1923-11-09
Applicant: A L POWELL POWER COMPANY INC
Inventor: POWELL ALVAH L
IPC: F01P1/02
CPC classification number: F01P1/02
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公开(公告)号:US1545924A
公开(公告)日:1925-07-14
申请号:US43130520
申请日:1920-12-16
Applicant: A L POWELL POWER COMPANY INC
Inventor: POWELL ALVAH L
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公开(公告)号:US1545516A
公开(公告)日:1925-07-14
申请号:US34395119
申请日:1919-12-10
Applicant: A L POWELL POWER COMPANY INC
Inventor: POWELL ALVAH L
CPC classification number: F01B9/047 , F02B41/04 , Y10T74/18088
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