Arthur G. Duppstadt

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Leechburg, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Multifocal contact lens and method of making the same
- Patent number 6,764,180
- Issue date Jul 20, 2004
- Arthur G. Duppstadt
- G02 - OPTICS
Information Patent Grant
Multifocal contact lens and method of making the same
- Patent number 6,709,102
- Issue date Mar 23, 2004
- Arthur G. Duppstadt
- G02 - OPTICS
Information Patent Grant
Alignment apparatus for an eyeglass hinge assembly and method emplo...
- Patent number 6,659,606
- Issue date Dec 9, 2003
- Arthur G. Duppstadt
- G02 - OPTICS
Information Patent Grant
Polishing tool for contact lenses and associated method
- Patent number 4,979,337
- Issue date Dec 25, 1990
- Arthur G. Duppstadt
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
Multifocal contact lens and method of making the same
- Publication number 20020093623
- Publication date Jul 18, 2002
- Arthur G. Duppstadt
- G02 - OPTICS