Inventor · disambiguated record
Karl O. Niedermeyer
Also filed as: NIEDERMEYER KARL · NIEDERMEYER KARL O
18 granted patents·1 pending application·696 citations·filing 1974–2007
96Inventor score
Top patents by PatentIndex Score
19 records- 0197US3941507ASafety supervisor for sump pumps and other hazardsNIEDERMEYER KARL O·Filed 1974·Granted Mar 2, 1976·101 cites·36 claims
- 0296US7339126B1Variable differential adjustorTRUSTY WARNS INC·Filed 2007·Granted Mar 4, 2008·44 cites·10 claims
- 0396US3972647AScreen for intake of emergency sump pumpNIEDERMEYER KARL O·Filed 1974·Granted Aug 3, 1976·76 cites·8 claims
- 0495US7700887B2Variable differential adjustorTRUSTY WARNS INC·Filed 2007·Granted Apr 20, 2010·39 cites·19 claims
- 0595US4228427AMonitor apparatus for sump pumpsNIEDERMEYER KARL O·Filed 1979·Granted Oct 14, 1980·84 cites·3 claims
- 0694US4087204AEnclosed sump pumpNIEDERMEYER KARL O·Filed 1976·Granted May 2, 1978·79 cites·12 claims
- 0792US4215975ASump pump with air column therein when pump is not operatingNIEDERMEYER KARL O·Filed 1978·Granted Aug 5, 1980·61 cites·5 claims
- 0888US4309157AProtection device and sump pumpNIEDERMEYER KARL O·Filed 1979·Granted Jan 5, 1982·48 cites·9 claims
- 0985US4228428AVisible signal for alarm, such as a smoke detectorNIEDERMEYER KARL O·Filed 1979·Granted Oct 14, 1980·36 cites·5 claims
- 1085US4086457AFloat switch signalling two different liquid levelsNIEDERMEYER KARL O·Filed 1976·Granted Apr 25, 1978·24 cites·10 claims
- 1180US3999890AEnclosed sump pumpNIEDERMEYER KARL O·Filed 1974·Granted Dec 28, 1976·30 cites·3 claims
- 1273US6712553B1Grid drain systemFiled 2002·Granted Mar 30, 2004·18 cites·12 claims
- 1365US4461614AThrough flow sump pumpNIEDERMEYER KARL O·Filed 1982·Granted Jul 24, 1984·22 cites·13 claims
- 1450US4177021AThrough flow sump pumpNIEDERMEYER KARL O·Filed 1977·Granted Dec 4, 1979·13 cites·16 claims
- 1546US7084363B1Variable differential adjustorTRUSTY WARNS INC·Filed 2003·Granted Aug 1, 2006·3 cites·9 claims
- 1644US4201519AThrough flow sump pumpNIEDERMEYER KARL O·Filed 1979·Granted May 6, 1980·10 cites·3 claims
- 1740US4230440AThrough flow sump pumpNIEDERMEYER KARL O·Filed 1979·Granted Oct 28, 1980·8 cites·3 claims
- 1839US2005281679A1Basement flood control systemNIEDERMEYER KARL·Filed 2004·Application pending·0 cites
- 1930US6160486AService alarm monitorFiled 1999·Granted Dec 12, 2000·0 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →