John M. Harrison

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Concord, NH, US

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Patents Grantslast 30 patents

Information Patent Grant
Electronic vehicle toll collection system and method
- Patent number 5,144,553
- Issue date Sep 1, 1992
- John J. Hassett
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Automatic toll processing apparatus
- Patent number 5,086,389
- Issue date Feb 4, 1992
- John J. Hassett
- G06 - COMPUTING CALCULATING COUNTING