4. Measuring, testing, or signalling instruments
  5. Measuring, regulating or indicating instrument, or casing
  6. Temperature, humidity, atmospheric condition

John F. O'Brien

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Ammunition feeder for a gun

Ordnance – Cartridge feeding – With magazine
Patent

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Bar code scanner with asterisk scan pattern

Registers – Coded record sensors – Particular sensor structure
Patent

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Book desk

Supports: cabinet structure – Mounted on wall – ceiling or spaced panels
Patent

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Calibration apparatus and method for charging unit of image...

Electrophotography – Control of electrophotography process – Control of charging
Reexamination Certificate

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Color printing machine

Recorders – Electric recording – Electrochemical
Patent

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Profile ID: LFUS-PAI-P-671163

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