Inventor · disambiguated record
Wil Siersma
Also filed as: SIERSMA WIL
3 granted patents·49 citations·filing 1996–1997
71Inventor score
Technology areasA63B
Files withHYDROFORCE INC3
Top patents by PatentIndex Score
3 records- 0159US5665039AExcercise and/or therapy apparatus having an impeller for use in a pool of liquidHYDROFORCE INC·Filed 1996·Granted Sep 9, 1997·35 cites·15 claims
- 0232US5906565ALiquid resistance or therapy system for use with an exercise and/or therapy apparatusHYDROFORCE INC·Filed 1996·Granted May 25, 1999·8 cites·30 claims
- 0329US5885194AAttachment system for suspending an exercise and/or therapy apparatus in a pool of liquidHYDROFORCE INC·Filed 1997·Granted Mar 23, 1999·6 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →