Timothy W. Graham

Follow

Person

Union Springs, NY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Miniature projection lamp
- Patent number 5,942,850
- Issue date Aug 24, 1999
- Welch Allyn, Inc.
- Douglas M. Rutan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrode for metal halide discharge lamp
- Patent number 5,420,477
- Issue date May 30, 1995
- Welch Allyn, Inc.
- John W. Sims
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low watt metal halide lamp
- Patent number 5,144,201
- Issue date Sep 1, 1992
- Welch Allyn, Inc.
- Timothy W. Graham
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light source having desired color temperature and chromaticity
- Patent number 5,144,190
- Issue date Sep 1, 1992
- Welch Allyn, Inc.
- Brian J. Thomas
- G02 - OPTICS
Information Patent Grant
Electrode for metal halide discharge lamp
- Patent number 5,083,059
- Issue date Jan 21, 1992
- Welch Allyn, Inc.
- Timothy W. Graham
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of adjusting a light source for color temperature and chroma...
- Patent number 5,059,146
- Issue date Oct 22, 1991
- Welch Allyn, Inc.
- Brian J. Thomas
- G02 - OPTICS