4. Electrical transmission or interconnection systems
  5. Plural supply circuits or sources
  6. Substitute or emergency source

Fredy E. Graf

Inventor

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

Details

Inventor

active

Battery backup system

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Optical card reader

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell 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

Fredy E. Graf does not yet have a rating. At this time, there are no reviews or comments for this inventor.

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

Rate now

     

Profile ID: LFUS-PAI-P-1101903

  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