Inventor · disambiguated record
John D. Pavolka
Also filed as: PAVOLKA JOHN D
3 granted patents·94 citations·filing 1976–1986
70Inventor score
Top patents by PatentIndex Score
3 records- 0192US4239424AMethod and apparatus for distribution of granular material in a railway hopper carPULLMAN INC·Filed 1979·Granted Dec 16, 1980·86 cites·4 claims
- 0236US4027921APressure probe unloading device for pneumatic operated discharge gatesPULLMAN INC·Filed 1976·Granted Jun 7, 1977·5 cites·10 claims
- 0326US4765517AValve arrangement with retainer bracket, for hopper car outlet gatePULLMAN RAIL LEASING INC·Filed 1986·Granted Aug 23, 1988·3 cites·22 claims
Join the waitlist — get patent alerts
Get an alert when John D. Pavolka 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 →