GB459074A
(https= )
GB1102829A
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1968-02-14
Contact structure for a power circuit breaker
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1947-03-04
Selective normalizing mechanisms
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1943-06-18
Improvements in and relating to contact arrangements for electric switches
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2024-10-01
一種可進行有無段落感切換的擺動式導芯機構
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1949-11-28
Improvements in or relating to keyboards, especially for electrically-controlled accounting or card-punching machines
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2018-09-04
一种断路器防弹跳辅助触头
GB863543A
(en )
1961-03-22
An electrically controlled typewriting machine
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(en )
1957-01-16
Push-button electric switches
GB711850A
(en )
1954-07-14
Thermostatically operated electric switch
US3017089A
(en )
1962-01-16
Spring powered key mechanism
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2024-07-19
一种电动闸阀点关延时改进电路
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1956-03-06
Power operated key action for typewriters and like business machines
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2019-03-26
一种断路器操作机构的合闸准备就绪信号装置
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1984-05-22
Key switch assembly having momentary closed interval
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1962-11-07
Calculating or similar accounting machine
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(zh )
2023-07-11
机械按键及其构成的键盘与多媒体设备
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(en )
1950-08-30
Keyboard impulse transmitter for step-by-step printing telegraph
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(zh )
2016-04-20
电动操作机构的指示装置
CN211376467U
(zh )
2020-08-28
一种稳定切换的小型机械开关
US2298201A
(en )
1942-10-06
Listing calculator
WO2023098840A1
(zh )
2023-06-08
一种操作机构及开关装置
GB956682A
(en )
1964-04-29
Improvements in or relating to circuit breakers
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(https= )
US2321013A
(en )
1943-06-08
Listing adding machine