Keith S. Campbell

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Wenham, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Ultrasonic cleaning method of cleaning chandeliers
- Patent number 5,863,343
- Issue date Jan 26, 1999
- Keith S. Campbell
- B08 - CLEANING
Information Patent Grant
Ultrasonic cleaning apparatus for cleaning chandeliers
- Patent number 5,472,005
- Issue date Dec 5, 1995
- Keith S. Campbell
- B08 - CLEANING