4. Telephonic communications
  5. Telephone line or system combined with diverse electrical...
  6. To produce visual-graphic copy

David W. Wallis

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Apparatus for extracting the fundamental frequency from a comple

Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters
Patent

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Battery-powered adapter

Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy
Patent

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Simplified driver for controlled flux ferrite phase shifter

Electrical transmission or interconnection systems – Residual or remanent magnetism control
Patent

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Profile ID: LFUS-PAI-P-347840

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