David C. Greenspan

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Vienna, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Protective cladding for a molybdenum substrate
- Patent number 4,977,001
- Issue date Dec 11, 1990
- Vesuvius Crucible Company
- David C. Greenspan
- G01 - MEASURING TESTING
Information Patent Grant
Immersion pyrometer with protective structure for sidewall use
- Patent number 4,749,416
- Issue date Jun 7, 1988
- System Planning Corporation
- David C. Greenspan
- G01 - MEASURING TESTING
Information Patent Grant
Method of making a thermocouple
- Patent number 4,746,534
- Issue date May 24, 1988
- System Planning Corporation
- R. Michael Phillippi
- G01 - MEASURING TESTING
Information Patent Grant
Immersion pyrometer
- Patent number 4,721,534
- Issue date Jan 26, 1988
- System Planning Corporation
- R. Michael Phillippi
- G01 - MEASURING TESTING
Information Patent Grant
Protective structure for an immersion pyrometer
- Patent number 4,721,533
- Issue date Jan 26, 1988
- System Planning Corporation
- R. Michael Phillippi
- G01 - MEASURING TESTING