4. Amusement devices: toys
  5. Aerodynamically supported or retarded
  6. Including rotary wing

Petrus A. M. Spierings

Inventor

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

Details

Inventor

active

Autorotative flyer

Amusement devices: toys – Aerodynamically supported or retarded – Including rotary wing
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Back support mechanism and method

Chairs and seats – Bottom or back with means to alter contour
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Wind turbine with automatic pitch and yaw control

Fluid reaction surfaces (i.e. – impellers) – With gyroscopic reference means for rotor control
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

Petrus A. M. Spierings does not yet have a rating. At this time, there are no reviews or comments for this inventor.

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

Rate now

     

Profile ID: LFUS-PAI-P-1140741

  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