Amaury D. Contreras

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Fontana, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Flat compass for marking large arcsand circles
- Patent number 7,823,294
- Issue date Nov 2, 2010
- Amaury D. Contreras
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
FLAT COMPASS FOR MARKING LARGE ARCSAND CIRCLES
- Publication number 20100000102
- Publication date Jan 7, 2010
- Amaury D. Contreras
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES