4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Optical or pre-photocell system

Richard A Irwin

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Method and apparatus for illumination control to increase...

Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate

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Method and apparatus for optically measuring drive train...

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate

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Method for sensing humidity in a tape library

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2059216

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