David J. Welch

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Landenberg, PA, US

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Patents Applicationslast 30 patents

Information Patent Application
Durable Insect Screen With Improved Optical Properties
- Publication number 20080289780
- Publication date Nov 27, 2008
- Gordon L. McGregor
- D03 - WEAVING
Information Patent Application
Durable insect screen with improved optical properties
- Publication number 20060169426
- Publication date Aug 3, 2006
- Gordon L. McGregor
- D03 - WEAVING
Information Patent Application
Insect screen with improved optical properties
- Publication number 20060160445
- Publication date Jul 20, 2006
- Gordon L. McGregor
- D03 - WEAVING
Information Patent Application
Durable insect screen with improved optical properties
- Publication number 20040203303
- Publication date Oct 14, 2004
- Gordon L. McGregor
- D03 - WEAVING
Information Patent Application
Insect screen with improved optical properties
- Publication number 20040192129
- Publication date Sep 30, 2004
- Gordon L. McGregor
- D03 - WEAVING