4. Communications: electrical
  5. Systems
  6. Selsyn type

Robert W. Donaldson

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Modem for pseudo noise communication on A.C. lines

Communications: electrical – Systems – Selsyn type
Patent

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Remote pull handle

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Design Patent

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Remote pull handle

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Design Patent

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Visor with extender blade and guide therefor

Land vehicles: bodies and tops – Bodies – Glare screen or visor
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1873279

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