Thomas D. Welles Jr.

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York, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Color picture tube having shadow mask with improved aperture shapes
- Patent number 5,689,149
- Issue date Nov 18, 1997
- Thomson Consumer Electronics, Inc.
- Thomas Dickson Welles
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Color picture tube having shadow mask with improved tie bar grading
- Patent number 5,243,253
- Issue date Sep 7, 1993
- Thomson Consumer Electronics, Inc.
- Bruce G. Marks
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Color picture tube with shadow mask having improved aperture border
- Patent number 5,030,881
- Issue date Jul 9, 1991
- RCA Licensing Corporation
- Bruce G. Marks
- H01 - BASIC ELECTRIC ELEMENTS