John E. Nelson

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Mountaintop, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Adjustable straight edged device for use with drafting board
- Patent number 4,334,364
- Issue date Jun 15, 1982
- Eberhard Faber, Inc.
- John E. Nelson
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES