Inventor · disambiguated record
Jan R. Defries
Also filed as: DEFRIES JAN RICHARD · STOLL KURT
3 granted patents·52 citations·filing 1975–1978
72Inventor score
Top patents by PatentIndex Score
3 records- 0172US4080877AWorking cylinder for pneumatic or hydraulic pressure mediaDEFRIES JAN RICHARD·Filed 1975·Granted Mar 28, 1978·25 cites·2 claims
- 0267US4212320AMultiway valveFESTO MASCHF STOLL G·Filed 1978·Granted Jul 15, 1980·18 cites·10 claims
- 0349US4199130AValve arrangementFESTO MASCHF STOLL G·Filed 1978·Granted Apr 22, 1980·9 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →