4. Communications: electrical
  5. Audible indication
  6. Percussion-type sound producer

John D. Pennell

Inventor

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

Details

Inventor

active

Apparatus and method for retaining phase information for use wit

Communications: electrical – Audible indication – Percussion-type sound producer
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Apparatus for AC-to-DC conversion which provides a signed DC...

Pulse or digital communications – Systems using alternating or pulsating current
Reexamination Certificate

  [ 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

John D. Pennell does not yet have a rating. At this time, there are no reviews or comments for this inventor.

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

Rate now

     

Profile ID: LFUS-PAI-P-1675343

  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