4. Measuring and testing
  5. Liquid level or depth gauge
  6. Immersible electrode type

Bruce W. Campbell

Inventor

Rate now
  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Inventor

active

Capacitance-type material level indicator

Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Voice operated switch

Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Bruce W. Campbell does not yet have a rating. At this time, there are no reviews or comments for this inventor.

If you have personal experience with Bruce W. Campbell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bruce W. Campbell will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-P-1739808

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.

Canada

 Charities
 Companies
 MP Candidates
 Patents
 Employee Salary Disclosure

World

 Places of the World
 Scientific Papers

United States

 Banks
 Companies
 Counties
 Patents
 Employee Salary Disclosure