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Meter beater timer

Communications: electrical – Systems – Timer control
Patent

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Meter dial encoder for remote meter reading

Communications: electrical – Systems – Call station
Patent

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Method and a device for telecommunication

Communications: electrical – Systems – Answer back
Patent

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Method and apparatus converting digital signals to analog signal

Communications: electrical – Systems – Selsyn type
Patent

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Method and apparatus for adjusting audible and visual...

Communications: electrical – Systems – Plural
Reexamination Certificate

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Method and apparatus for alerting basketball fans of...

Communications: electrical – Systems – Game reporting
Reexamination Certificate

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Method and apparatus for attaching power line communications...

Communications: electrical – Systems – Selsyn type
Reexamination Certificate

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Method and apparatus for attaching power line communications...

Communications: electrical – Systems – Selsyn type
Reexamination Certificate

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Method and apparatus for attaching power line communications...

Communications: electrical – Systems – Selsyn type
Reexamination Certificate

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Method and apparatus for communicating in building structures an

Communications: electrical – Systems – Selsyn type
Patent

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Method and apparatus for communication over electric power lines

Communications: electrical – Systems – Selsyn type
Patent

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Method and apparatus for conveying audiovisual information

Communications: electrical – Systems – Plural
Patent

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Method and apparatus for coupling transceiver to power line carr

Communications: electrical – Systems – Selsyn type
Patent

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Method and apparatus for creating and detecting alarm condition

Communications: electrical – Systems – Call station
Patent

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Method and apparatus for creating optical displays

Communications: electrical – Systems – Portable self-contained
Patent

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Method and apparatus for data transmission in a textile machine

Communications: electrical – Systems – Selsyn type
Patent

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Method and apparatus for delivery alarm for livestock animals

Communications: electrical – Systems – Call station
Patent

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Method and apparatus for detecting a blockage in a vapor flow li

Communications: electrical – Systems – Call station
Patent

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Method and apparatus for detecting illegal pitches

Communications: electrical – Systems – Game reporting
Patent

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Method and apparatus for detection of warning system breach

Communications: electrical – Systems – Manual alarm telegraph; e.g. – other than signal box type
Reexamination Certificate

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