4. Communications: electrical
  5. Audible indication
  6. Percussion-type sound producer

Frederick N. Trofimenkoff

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Clock-controlled pulse width modulator

Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent

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Clock-controlled voltage-to-frequency converter

Coded data generation or conversion – Analog to or from digital conversion – Bipolar
Patent

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Resistance bridge and its use in conversion systems

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting input current or voltage to output frequency
Patent

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Resistance bridge and its use in conversion systems

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting input current or voltage to output frequency
Patent

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Skate sharpening apparatus

Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
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Profile ID: LFUS-PAI-P-140028

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