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US1751606A
|
|
Picture-transmission system
|
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US1770486A
|
|
Double-grid-tube transmitter
|
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US1724684A
|
|
Picture telegraphy
|
|
US1814399A
|
|
Indicator
|
|
US1798616A
|
|
High-speed regulator and governor
|
|
US1804838A
|
|
Converting electrical oscillations into mechanical movement
|
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US1792752A
|
|
Light control
|
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US1716903A
|
|
Synchronizing method and arrangement therefor
|
|
US1792766A
|
|
Electric-light relay
|
|
US1791928A
|
|
Photo-electric cell
|
|
US1724668A
|
|
Control means for modulator tubes
|
|
US1691222A
|
|
Speed-control means for high-frequency generators
|
|
US1717630A
|
|
Amplifier
|
|
US1654762A
|
|
Railway signaling
|
|
US1708524A
|
|
Railway signaling
|
|
US1757330A
|
|
Wireless system
|
|
US1744711A
|
|
Radio transmitting system
|
|
US1717627A
|
|
Balanced bridge for autodyne receiver circuits
|
|
US1656195A
|
|
Arrangement for the generation of oscillations
|
|
US1624065A
|
|
Frequency changer for short waves
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