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US1604227A
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Telephone transmitter
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US1689391A
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Telephone system and appliances
|
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US1663711A
|
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Electrical apparatus
|
|
US1693663A
|
|
Signaling system and mechanism
|
|
US1641940A
|
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Synchronous clock system
|
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US1599158A
|
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Whistle alarm
|
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US1681186A
|
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Electrical fitting
|
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US1735706A
|
|
Controller for electric indicators
|
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US1642284A
|
|
Thermostatic circuit controller
|
|
US1675989A
|
|
Annunciator system
|
|
US1518795A
|
|
Electric connecter
|
|
US1405839A
|
|
Ship signaling apparatus
|
|
US1492913A
|
|
Electrical indicator motor
|
|
US1521534A
|
|
Annunciator drop
|
|
US1659180A
|
|
Electrical order telegraph instrument
|
|
US1560750A
|
|
Generator for use in speed-indicator systems
|
|
US1492939A
|
|
Flow indicator
|
|
US1387823A
|
|
Slack-wire compensator for ships' telegraphs
|
|
US1481278A
|
|
Multiple-socket receptacle strip
|
|
US1090816A
|
|
Signaling device.
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