4. Cryptography
  5. Communication system using cryptography
  6. Time segment interchange

S. Koehler

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Alternating current ferroresonant transformer with low harmonic

Electricity: power supply or regulation systems – Self-regulating – Using a transformer or inductor as the final control device
Patent

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Apparatus and method for obtaining power from a battery charger

Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent

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Apparatus for bending metal sheet

Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Clamp structure constitutes sole initial metal-deforming...
Patent

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Apparatus for computing BTU content in a sample of gas

Thermal measuring and testing – Calorimetry – Heat value of combustion
Patent

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Apparatus for converting a direct current into an alternating cu

Electric power conversion systems – Current conversion – Using semiconductor-type converter
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Profile ID: LFUS-PAI-P-101240

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