Inventor · disambiguated record
C. David Hale
Also filed as: HALE C DAVID
7 granted patents·2 pending applications·193 citations·filing 1988–2013
88Inventor score
Files withHALE C DAVID3ELECTRIC EEL MANUFACTURING CO2ELECTRIC EEL MFG CO INC2ELECTRIC EEL MFG COMPANY INC1ELECTRONIC EEL MFG COMPANY INC1
Top patents by PatentIndex Score
9 records- 0191US7891038B2Sewer cleaning machineELECTRIC EEL MFG CO INC·Filed 2010·Granted Feb 22, 2011·12 cites·9 claims
- 0291US4887929ACable couplerELECTRIC EEL MANUFACTURING CO·Filed 1988·Granted Dec 19, 1989·90 cites·5 claims
- 0388US9009906B2Motorized drain cleaning machineELECTRIC EEL MFG COMPANY INC·Filed 2013·Granted Apr 21, 2015·18 cites·19 claims
- 0487US7757332B1Sewer cleaning machineELECTRIC EEL MFG CO INC·Filed 2006·Granted Jul 20, 2010·12 cites·3 claims
- 0583US8615837B2Motorized drain cleaning machine with speed controllerHALE C DAVID·Filed 2009·Granted Dec 31, 2013·24 cites·19 claims
- 0682US7222383B2Torque limiting drive pulley for a belt driven drain cleaning machineHALE C DAVID·Filed 2003·Granted May 29, 2007·24 cites·10 claims
- 0761US2009208282A1Connector for Pipe Cleaning ApparatusHALE C DAVID·Filed 2009·Application pending·0 cites
- 0843US2003231927A1Connector for pipe cleaning apparatusELECTRONIC EEL MFG COMPANY INC·Filed 2002·Application pending·0 cites
- 0938US5875508AHydrostatic sewer cleaning machineELECTRIC EEL MANUFACTURING CO·Filed 1997·Granted Mar 2, 1999·13 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →