Roger W. Dudley

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Falls Church, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Musical postage stamp display device
- Patent number 5,461,187
- Issue date Oct 24, 1995
- Roger W. Dudley
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Display device
- Patent number 4,889,748
- Issue date Dec 26, 1989
- Roger W. Dudley
- B44 - DECORATIVE ARTS