Inventor · disambiguated record
Hartzell H. Schmidgall
Also filed as: SCHMIDGALL HARTZELL H
6 granted patents·93 citations·filing 1980–2011
84Inventor score
Files withHAWKEYE CONCRETE PROD CO3HAWKEYE CONCRET PRODUCTS CO1HAWKEYE OF IOWA LTD1SCHMIDGALL HARTZELL H1
Top patents by PatentIndex Score
6 records- 0184US8500383B2Trailer and unloading deviceSCHMIDGALL HARTZELL H·Filed 2011·Granted Aug 6, 2013·11 cites·5 claims
- 0270US4708621AConcrete pipe making machineHAWKEYE CONCRETE PROD CO·Filed 1985·Granted Nov 24, 1987·27 cites·7 claims
- 0364US4301638ASpacer for reinforced concrete structuresHAWKEYE OF IOWA LTD·Filed 1980·Granted Nov 24, 1981·32 cites·2 claims
- 0448US4578235AMethod for lining pipeHAWKEYE CONCRETE PROD CO·Filed 1983·Granted Mar 25, 1986·10 cites·3 claims
- 0537US5587185AAutomated system for handling and cleaning concrete pipe-making componentsHAWKEYE CONCRETE PROD CO·Filed 1994·Granted Dec 24, 1996·8 cites·6 claims
- 0630US4657498AApparatus for lining pipeHAWKEYE CONCRET PRODUCTS CO·Filed 1986·Granted Apr 14, 1987·5 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →