Jess W. Hayes

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Richmond, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for producing perspective drawings
- Patent number 4,453,318
- Issue date Jun 12, 1984
- Jess W. Hayes
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Brake for drafting parallel
- Patent number 4,445,280
- Issue date May 1, 1984
- Jess W. Hayes
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Magnifying device for a hand-held implement
- Patent number 4,398,800
- Issue date Aug 16, 1983
- Jess W. Hayes
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Magnifying device for use with a triangular rule
- Patent number 4,316,330
- Issue date Feb 23, 1982
- Jess W. Hayes
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES