John R. McPherson Sr.

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West Newton, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Thermographic recording films
- Patent number 5,489,566
- Issue date Feb 6, 1996
- Polaroid Corporation
- Edward J. Dombrowski
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Transparent thermographic recording films
- Patent number 5,278,127
- Issue date Jan 11, 1994
- Polaroid Corporation
- Edward J. Dombrowski
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS