Donald E. Hatfield

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Mattoon, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Single ended quartz projection lamp
- Patent number 6,203,392
- Issue date Mar 20, 2001
- General Electric Company
- Bernard W. Rachel
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Design and cooling of single ended quartz projection lamps
- Patent number 6,011,353
- Issue date Jan 4, 2000
- General Electric Company
- Bernard W. Rachel
- H01 - BASIC ELECTRIC ELEMENTS