John F. McGrath Jr.

Follow

Person

Arlington, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Constant deviation scanning apparatus
- Patent number 4,934,780
- Issue date Jun 19, 1990
- Compugraphic Corporation
- John F. McGrath
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Constant deviation scanning apparatus
- Patent number 4,793,672
- Issue date Dec 27, 1988
- Compugraphic Corporation
- John F. McGrath
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS