Inventor · disambiguated record
Robert C. Friesl
Also filed as: FRIESL ROBERT C
3 granted patents·292 citations·filing 1992–1997
79Inventor score
Top patents by PatentIndex Score
3 records- 0181US5507488ABall diverter for a pinball gameWILLIAMS ELECTRONICS GAMES INC·Filed 1995·Granted Apr 16, 1996·134 cites·6 claims
- 0277US5899454ARamp with integral ball deflector for pinball gamesWILLIAMS ELECTRONICS GAMES INC·Filed 1997·Granted May 4, 1999·115 cites·6 claims
- 0367US5211613AExercising machine with improved anti-drafting energy absorbing fanwheelSCHWINN BICYCLE CO·Filed 1992·Granted May 18, 1993·43 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →