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公开(公告)号:US2219177A
公开(公告)日:1940-10-22
申请号:US7641936
申请日:1936-04-25
Applicant: GEN ELECTRIC
Inventor: DUNHAM GEORGE W
IPC: D06F49/02
CPC classification number: D06F49/02
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公开(公告)号:US2192186A
公开(公告)日:1940-03-05
申请号:US17628537
申请日:1937-11-24
Applicant: GEN ELECTRIC
Inventor: DUNHAM GEORGE W
IPC: D06F65/06
CPC classification number: D06F65/06
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公开(公告)号:US2161618A
公开(公告)日:1939-06-06
申请号:US1425535
申请日:1935-04-02
Applicant: GEN ELECTRIC
Inventor: DUNHAM GEORGE W
IPC: D06F13/02
CPC classification number: D06F13/02 , Y10T74/1812 , Y10T74/20012 , Y10T477/327
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