4. Boring or penetrating the earth
  5. Bit or bit element
  6. Cutting edges facing in opposite axial directions

Charles D. Hollar

Inventor

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

Details

Inventor

active

Back drilling threaded bit

Machines not elsewhere specified – Material working – abrading – or founding machinery – Element or attachment
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Drill bit for reverse drilling

Boring or penetrating the earth – Bit or bit element – Cutting edges facing in opposite axial directions
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

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

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

Rate now

     

Profile ID: LFUS-PAI-P-1520409

  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