Inventor · disambiguated record
Errol C. Armstrong
Also filed as: ARMSTRONG ERROL · ARMSTRONG ERROL C
13 granted patents·390 citations·filing 1973–2005
94Inventor score
Top patents by PatentIndex Score
13 records- 0188US3934323ASolar heat exchange panel and method of fabricationFAFCO INC·Filed 1973·Granted Jan 27, 1976·49 cites·10 claims
- 0287US7261309B2Wheelchair drive mechanismWATWOOD INC·Filed 2005·Granted Aug 28, 2007·31 cites·2 claims
- 0380US6755430B1Wheelchair drive assemblyWATWOOD BRIAN M·Filed 2001·Granted Jun 29, 2004·55 cites·6 claims
- 0480US4098331ASolar heat exchange panel and method of fabricationFAFCO INC·Filed 1977·Granted Jul 4, 1978·39 cites·6 claims
- 0571US4598450AMethod for fabricating a solar energy collector assembly utilizing a specifically designed fluid storage arrangementFAFCO INC·Filed 1984·Granted Jul 8, 1986·20 cites·8 claims
- 0670US6893035B2Wheelchair drive mechanismFiled 2002·Granted May 17, 2005·26 cites·14 claims
- 0766US4388035ADibble tube soil plug planterBUT ANTLE INC·Filed 1981·Granted Jun 14, 1983·30 cites·1 claims
- 0858US4355588ATransplanting machineBUT ANTLE INC·Filed 1980·Granted Oct 26, 1982·20 cites·12 claims
- 0957US6007082AWheelchair driver and braking systemFiled 1993·Granted Dec 28, 1999·37 cites·15 claims
- 1055US4443151AAutomatic soil plug loader and feederBUT ANTLE INC·Filed 1980·Granted Apr 17, 1984·22 cites·16 claims
- 1154US5263729AWheelchair driver and braking systemWATWOOD BRIAN M·Filed 1992·Granted Nov 23, 1993·34 cites·22 claims
- 1250US4294179ADibble tube soil plug planterBUT ANTLE INC·Filed 1979·Granted Oct 13, 1981·13 cites·3 claims
- 1347US4422990AMethod and apparatus for making soil plugsCASTLE & COOKE TECHNICULTURE·Filed 1982·Granted Dec 27, 1983·14 cites·36 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →