4. Electric resistance heating devices
  5. Heating devices
  6. Radiant heater

John A. Letchford

Inventor

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

Details

Inventor

active

Filter holder

Lighting – Light fixture – Element or attachment
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Heating apparatus

Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Quartz infra-red lamps

Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Tungsten halogen lamp

Electric resistance heating devices – Heating devices – Radiant heater
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

John A. Letchford 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 A. Letchford, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and John A. Letchford will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-P-367000

  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