Automatic dialing and alarm system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4461927
SERIAL NO

06471645

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A system is disclosed which may readily be added to an existing system of phones and electrical outlets. It includes circuitry that, responsive to sensing of a condition, seizes a telephone line, dials a single digit and introduces a preferably beeping signal into the line to warn the switchboard operator of the sensed condition. The system repeats the cycle until the sensed condition ceases.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
OLPAT INC A CORP OF MD9000 OLD GEORGETOWN ROAD BETHESDA MD 20814

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harrison, John M P.O. Box 1214, Concord, NH 03301 23 1266
Olson, Ronald E 3416 Oakhurst Dr., Burtonsville, MD 20866 4 48
Windel, William H 3412 Oakhurst Dr., Burtonsville, MD 20866 1 17

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