4. Uncategorized

David L. Hill

Uncategorized

Inventor

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

Details

Inventor

A railroad signaling and communication system using a...

B - Operations – Transporting – 61 – L
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Biooxidation process for recovery of metal values from...

C - Chemistry – Metallurgy – 22 – B
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Hand grip for push-ups

A - Human Necessities – 63 – B
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Tobacco pipe

Uncategorized
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Hand grip for push-ups

A - Human Necessities – 63 – B
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Tobacco pipe

Uncategorized
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

LandOfFree

Say what you really think

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

Rating

David L. Hill does not yet have a rating. At this time, there are no reviews or comments for this inventor.

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

Rate now

     

Profile ID: LFCA-PAI-P-98264

  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