John J. Scanlon

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Philadelphia, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Pens for low torque chart recorders
- Patent number 4,564,852
- Issue date Jan 14, 1986
- Graphic Controls Corporation
- Joseph Pelensky
- G01 - MEASURING TESTING
Information Patent Grant
Disposable markers adapted for constant width and close proximity t...
- Patent number 4,337,471
- Issue date Jun 29, 1982
- Graphic Controls Corporation
- James R. Hubbard
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES