4. Heat exchange
  5. With alarm, indicator, signal, register, recorder, test or...
  6. Remotely controlled inspection means

Robert G. Pratt

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Control for dual heating system including a heat pump and furnac

Heat exchange – With alarm – indicator – signal – register – recorder – test or... – Remotely controlled inspection means
Patent

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Electrical appliance energy consumption control methods and...

Electrical transmission or interconnection systems – Plural load circuit systems – Control of current or power
Reexamination Certificate

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Electrical appliance energy consumption control methods and...

Data processing: generic control systems or specific application – Generic control system – apparatus or process – Sequential or selective
Reexamination Certificate

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Fiber optic displacement transducer

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

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Microprocessor electric vehicle charging and parking meter syste

Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent

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Profile ID: LFUS-PAI-P-1262623

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