Walter R. Spofford

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Bedford, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Temperature sensing circuit for semiconductor junction temperature...
- Patent number 4,418,339
- Issue date Nov 29, 1983
- Emhart Industries, Inc.
- Walter R. Spofford
- G01 - MEASURING TESTING
Information Patent Grant
Oscillator circuit for controlling the power level of a microwave oven
- Patent number 4,323,861
- Issue date Apr 6, 1982
- Emhart Industries, Inc.
- Louis M. Sandler
- G05 - CONTROLLING REGULATING
Information Patent Grant
Implemental means for a touch control system
- Patent number 4,322,631
- Issue date Mar 30, 1982
- Emhart Industries, Inc.
- Walter R. Spofford
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Alternating current power control circuit
- Patent number 4,314,197
- Issue date Feb 2, 1982
- Emhart Industries, Inc.
- Louis M. Sandler
- G05 - CONTROLLING REGULATING
Information Patent Grant
Means and method for controlling the operation of a drying apparatus
- Patent number 4,206,552
- Issue date Jun 10, 1980
- Mallory Components Group Emhart Industries, Inc.
- Daniel I. Pomerantz
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Linearization means and method for a thermistor temperature sensing...
- Patent number 4,148,220
- Issue date Apr 10, 1979
- P. R. Mallory & Co. Inc.
- Walter R. Spofford
- G01 - MEASURING TESTING