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公开(公告)号:US1856452A
公开(公告)日:1932-05-03
申请号:US44791630
申请日:1930-04-28
Applicant: ARMSTRONG JOHN J
Inventor: ARMSTRONG JOHN J
IPC: B01D33/067
CPC classification number: B01D33/067 , B01D33/09 , B01D33/466 , B01D33/60 , B01D2201/282
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公开(公告)号:US1564926A
公开(公告)日:1925-12-08
申请号:US67165723
申请日:1923-10-30
Applicant: ARMSTRONG JOHN J , WOODFORD ROBERT S
Inventor: ARMSTRONG JOHN J , WOODFORD ROBERT S
IPC: B65G33/06
CPC classification number: B65G33/06
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公开(公告)号:US1792797A
公开(公告)日:1931-02-17
申请号:US32330728
申请日:1928-12-03
Applicant: ARMSTRONG JOHN J
Inventor: ARMSTRONG JOHN J
CPC classification number: B01D25/215 , B01D33/21 , B01D33/23 , B01D37/02
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公开(公告)号:US995940A
公开(公告)日:1911-06-20
申请号:US1910583409
申请日:1910-09-23
Applicant: ARMSTRONG JOHN J
Inventor: ARMSTRONG JOHN J
CPC classification number: A62C33/06
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