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公开(公告)号:US1752547A
公开(公告)日:1930-04-01
申请号:US20339327
申请日:1927-07-05
Applicant: ALTORFER BROS CO
Inventor: ALTORFER ALPHEUS W
IPC: D06F49/08
CPC classification number: D06F49/08
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公开(公告)号:US1717646A
公开(公告)日:1929-06-18
申请号:US18868627
申请日:1927-05-04
Applicant: ALTORFER BROS CO
Inventor: ALTORFER ALPHEUS W
IPC: D06F29/02
CPC classification number: D06F29/02
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公开(公告)号:US1688001A
公开(公告)日:1928-10-16
申请号:US19890727
申请日:1927-06-15
Applicant: ALTORFER BROS CO
Inventor: ALTORFER ALPHEUS W
IPC: D06F13/00
CPC classification number: D06F13/00
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公开(公告)号:US1688000A
公开(公告)日:1928-10-16
申请号:US18868727
申请日:1927-05-04
Applicant: ALTORFER BROS CO
Inventor: ALTORFER ALPHEUS W
IPC: D06F29/02
CPC classification number: D06F29/02
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公开(公告)号:US1640343A
公开(公告)日:1927-08-30
申请号:US68016423
申请日:1923-12-12
Applicant: ALTORFER BROS CO
Inventor: ALTORFER ALPHEUS W
IPC: D06F15/00
CPC classification number: D06F15/00
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公开(公告)号:US1601486A
公开(公告)日:1926-09-28
申请号:US60353822
申请日:1922-11-27
Applicant: ALTORFER BROS CO
Inventor: ALTORFER ALPHEUS W
IPC: D06F27/00
CPC classification number: D06F27/00
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公开(公告)号:US1582234A
公开(公告)日:1926-04-27
申请号:US63550923
申请日:1923-04-30
Applicant: ALTORFER BROS CO
Inventor: ALTORFER ALPHEUS W
IPC: D06F45/26
CPC classification number: D06F45/26
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公开(公告)号:US1572633A
公开(公告)日:1926-02-09
申请号:US44783321
申请日:1921-02-25
Applicant: ALTORFER BROS CO
Inventor: ALTORFER ALPHEUS W
IPC: D06F67/10
CPC classification number: D06F67/10
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公开(公告)号:US1565243A
公开(公告)日:1925-12-15
申请号:US63387723
申请日:1923-04-23
Applicant: ALTORFER BROS CO
Inventor: ALTORFER ALPHEUS W
IPC: D06F27/00
CPC classification number: D06F27/00
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公开(公告)号:US1563135A
公开(公告)日:1925-11-24
申请号:US44783221
申请日:1921-02-25
Applicant: ALTORFER BROS CO
Inventor: ALTORFER ALPHEUS W
IPC: D06F65/06
CPC classification number: D06F65/06 , Y10T74/20726
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