Scott L. Spence

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Port Washington, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Elastomer type low pressure sensor
- Patent number 5,090,246
- Issue date Feb 25, 1992
- Johnson Service Corp.
- Jeannine O. Colla
- G01 - MEASURING TESTING
Information Patent Grant
Differential pressure transducer
- Patent number 5,024,294
- Issue date Jun 18, 1991
- Johnson Service Company
- Robert A. Van Fossen
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Furnace draft control with remote control feature
- Patent number 4,677,357
- Issue date Jun 30, 1987
- Scott L. Spence
- G05 - CONTROLLING REGULATING
Information Patent Grant
Differential pressure control apparatus
- Patent number 4,626,681
- Issue date Dec 2, 1986
- Johnson Service Company
- Thomas E. Hayes
- G05 - CONTROLLING REGULATING
Information Patent Grant
Differential pressure transmitter
- Patent number 4,606,229
- Issue date Aug 19, 1986
- Johnson Service Company
- Scott L. Spence
- G01 - MEASURING TESTING
Information Patent Grant
High gain pneumatic switch
- Patent number 4,467,998
- Issue date Aug 28, 1984
- Johnson Service Company
- Scott L. Spence
- H01 - BASIC ELECTRIC ELEMENTS