Douglas J. Hatch

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Chittenango, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Phase-locked loop capable of generating a plurality of stable frequ...
- Patent number 4,629,999
- Issue date Dec 16, 1986
- North American Philips Corp.
- Douglas J. Hatch
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method and apparatus for controlling access to selected television...
- Patent number 4,521,809
- Issue date Jun 4, 1985
- North American Philips Corporation
- Joseph P. Bingham
- H04 - ELECTRIC COMMUNICATION TECHNIQUE