Inventor · disambiguated record

Jim Helfenstein

Also filed as: HELFENSTEIN JIM

1 granted patent·7 citations·filing 1989–1989

28Inventor score

Technology areasF15B

Files withWILLIAMS CONTROLS INC1

Top patents by PatentIndex Score

1 record

0127US4926905AManually operated air valve and actuator in combination control a hydraulic spool valve for maneuvering heavy equipmentWILLIAMS CONTROLS INC·Filed 1989·Granted May 22, 1990·7 cites·4 claims

Join the waitlist — get patent alerts

Get an alert when Jim Helfenstein files or is granted a new patent.

We store only your email — no account needed. See our privacy policy.

Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →