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US4600819A
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Switch assembly
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US4433317A
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Controlled floating contactor switch
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US4203016A
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Electric switch utilizing coil spring torsion biasing in switch operation
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US4004121A
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Electrical switch with wire beam spring contact closer
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US3845264A
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Switch with liquid containing tube for keyboard use
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US3707611A
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Coding keyboard and electrical switch therefor
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Switch
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US3582594A
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Actuator useable for electric switches and the like
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US3547247A
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Character adding device for typewriting equipment
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US3537565A
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Adapter for positioning a character adding device on typewriting equipment
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