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公开(公告)号：US1228767A
公开(公告)日：1917-06-05
申请号：US15546317
申请日：1917-03-17
Applicant: FURBER FREDERICK M
Inventor： FURBER FREDERICK M
CPC classification number: H01T13/36 , Y10T29/49918
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公开(公告)号：US920860A
公开(公告)日：1909-05-04
申请号：US1908446218
申请日：1908-07-31
Applicant: GARDNER GEORGE B , FURBER FREDERICK M
Inventor： GARDNER GEORGE B , FURBER FREDERICK M
CPC classification number: B60Q1/124
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