Paul E. Brefka

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Southboro, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Talking book with an infrared detector used to detect page turning
- Patent number 4,636,881
- Issue date Jan 13, 1987
- Shaw; James T.
- Paul E. Brefka
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Thermometer probe unit
- Patent number D250753
- Issue date Jan 9, 1979
- Johnson & Johnson
- Robert B. Turner
- D10 - Measuring, testing, or signalling instruments
Information Patent Grant
Electronic thermometer housing
- Patent number D249475
- Issue date Sep 19, 1978
- Johnson & Johnson
- Robert Bruce Turner
- D10 - Measuring, testing, or signalling instruments
Information Patent Grant
Protective case for electrical instruments on circuit boards
- Patent number 4,092,698
- Issue date May 30, 1978
- Analog Devices, Incorporated
- Paul E. Brefka
- G01 - MEASURING TESTING
Information Patent Grant
Removable probe unit for electronic measuring system
- Patent number 4,008,614
- Issue date Feb 22, 1977
- Johnson & Johnson
- Robert Bruce Turner
- G01 - MEASURING TESTING