4. Telephonic communications
  5. Substation or terminal circuitry
  6. For loudspeaking terminal

John B. Berryhill

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Automatic echo cancellation for an integrated services...

Multiplex communications – Duplex – Transmit/receive interaction control
Reexamination Certificate

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Concentric electrode DC arc system and their use in...

Industrial electric heating furnaces – Arc furnace device – Power supply system
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Concentric electrode DC arc systems and their use in...

Electric resistance heating devices – Heating devices – Borehole type
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Drug document production system

Data processing: database and file management or data structures – Database design – Data structure types
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Integrated semiconductor microchannel plate and planar diode...

Active solid-state devices (e.g. – transistors – solid-state diode – Thin active physical layer which is – Low workfunction layer for electron emission
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Profile ID: LFUS-PAI-P-2074588

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