Inventor · disambiguated record
Keith N. Krier
Also filed as: KRIER KEITH N
6 granted patents·232 citations·filing 1974–1980
87Inventor score
Files withTENNANT CO6
Top patents by PatentIndex Score
6 records- 0184US4378855AMulti-speed drive with forward/reverse lockoutTENNANT CO·Filed 1979·Granted Apr 5, 1983·62 cites·11 claims
- 0282US4138756ASurface maintenance machine drive and brushTENNANT CO·Filed 1977·Granted Feb 13, 1979·41 cites·11 claims
- 0382US3942218AScrubbing machineTENNANT CO·Filed 1974·Granted Mar 9, 1976·47 cites·13 claims
- 0473US3938212AScrubbing machineTENNANT CO·Filed 1974·Granted Feb 17, 1976·31 cites·7 claims
- 0569US4262382AMulti-speed brush controlTENNANT CO·Filed 1979·Granted Apr 21, 1981·29 cites·14 claims
- 0652US4334335AScrubber with hydraulic squeegee liftTENNANT CO·Filed 1980·Granted Jun 15, 1982·22 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →