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公开(公告)号:US2403115A
公开(公告)日:1946-07-02
申请号:US56757844
申请日:1944-12-11
Applicant: MCGRAW ELECTRIC CO
Inventor: OLVING BROR G
CPC classification number: D06F75/38 , D06F75/246
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32.
公开(公告)号:US2403022A
公开(公告)日:1946-07-02
申请号:US35726440
申请日:1940-09-18
Applicant: REIMERS ALFRED E
Inventor: REIMERS ALFRED E
IPC: D06F75/24
CPC classification number: D06F75/24
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公开(公告)号:US2241067A
公开(公告)日:1941-05-06
申请号:US29416539
申请日:1939-09-09
Applicant: GEN ELECTRIC
Inventor: OSMUND HOLM-HANSEN
CPC classification number: D06F75/38 , D06F75/246
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公开(公告)号:US2222327A
公开(公告)日:1940-11-19
申请号:US28715939
申请日:1939-07-28
Applicant: THOMAS WALKUP SAMUEL
Inventor: THOMAS WALKUP SAMUEL
IPC: D06F75/24
CPC classification number: D06F75/246
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35.Small size electroapparatus to be used as toys and for educational and domestic purposes 失效
Title translation: 小型电子装置用作玩具和教育和家庭用途公开(公告)号:US2210629A
公开(公告)日:1940-08-06
申请号:US18898638
申请日:1938-02-05
Applicant: CLEMENZ KREHER G M B H
Inventor: GEB MEDER ANNA BABETE MARQUARD
IPC: D06F75/24
CPC classification number: D06F75/24
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公开(公告)号:US2186930A
公开(公告)日:1940-01-09
申请号:US266735
申请日:1935-01-21
Applicant: MCGRAW ELECTRIC CO
Inventor: SCHARF FRANK W
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公开(公告)号:US2105229A
公开(公告)日:1938-01-11
申请号:US4983735
申请日:1935-11-14
Applicant: SAMSON UNITED CORP
Inventor: SAMUELS ABE O
IPC: D06F75/24
CPC classification number: D06F75/24
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公开(公告)号:US1804827A
公开(公告)日:1931-05-12
申请号:US38368029
申请日:1929-08-05
Applicant: SID POST
Inventor: EVERTS WALTER W
IPC: D06F75/24
CPC classification number: D06F75/243
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公开(公告)号:US1680748A
公开(公告)日:1928-08-14
申请号:US5897225
申请日:1925-09-28
Applicant: EDISON ELECTRIC APPLIANCE CO
Inventor: SHROYER JACOB L
IPC: D06F75/24
CPC classification number: D06F75/24
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公开(公告)号:US1673708A
公开(公告)日:1928-06-12
申请号:US13361126
申请日:1926-09-04
Applicant: FITZGERALD MFG CO
Inventor: LUDWIG REICHOLD
IPC: D06F75/24
CPC classification number: D06F75/24
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