Inventor · disambiguated record
V. Walter Hafner
Also filed as: HAFNER V WALTER
17 granted patents·286 citations·filing 1982–2000
94Inventor score
Top patents by PatentIndex Score
17 records- 0189US5067181ABlow out toilet with low water volume usageACORN ENG CO·Filed 1990·Granted Nov 26, 1991·41 cites·8 claims
- 0287US4462123AFabricated floor drain with large stepped flange for elastomeric trowelled coveringACORN ENG CO·Filed 1982·Granted Jul 31, 1984·53 cites·10 claims
- 0386USD411876SWash basinsACORN ENG CO·Filed 1998·Granted Jul 6, 1999·30 cites·1 claims
- 0470US4423527AFabricated floor drain with combination anchoring and seepage control flangeACORN ENGINEERING·Filed 1982·Granted Jan 3, 1984·30 cites·12 claims
- 0568US6394411B1Extractor valve assemblyACORNVAC INC·Filed 2000·Granted May 28, 2002·15 cites·15 claims
- 0663USD281714STamper-proof lavatory and toilet unitMORRIS EARL L·Filed 1983·Granted Dec 10, 1985·10 cites·1 claims
- 0759US4630644ADual operated metering valve connected to both a hand operated push button and a foot operated push buttonACORN ENG CO·Filed 1986·Granted Dec 23, 1986·18 cites·8 claims
- 0857US4571901AVandal-resistant security view portACORN ENG CO·Filed 1984·Granted Feb 25, 1986·19 cites·14 claims
- 0955US4512241APlenum/vacuum chamber with duct connection for installation in cabinet of fixture to control air supply or returnACORN ENG CO·Filed 1983·Granted Apr 23, 1985·15 cites·10 claims
- 1053US6311718B1Activator valve for providing a timed vacuum at an output portACORN ENG CO·Filed 2000·Granted Nov 6, 2001·13 cites·18 claims
- 1146US4434516AWall sleeve and installation jig for multiple adjacent fixture mountingACORN ENG CO·Filed 1983·Granted Mar 6, 1984·12 cites·12 claims
- 1239US4682533AVandal resistant and tamper proof pneumatic push button assembly for moving a volume of fluidACORN ENG CO·Filed 1986·Granted Jul 28, 1987·9 cites·29 claims
- 1338US4630638ARotating cap, screen and mounting means for protecting air metering valveACORN ENG CO·Filed 1986·Granted Dec 23, 1986·6 cites·16 claims
- 1435US4505189AVandal-resistant and tamper-proof plenum or vacuum chamber security air flow adjustment deviceACORN ENG CO·Filed 1983·Granted Mar 19, 1985·6 cites·9 claims
- 1533US4492430ASecurity mirror replaceable from pipe chaseACORN ENG CO·Filed 1983·Granted Jan 8, 1985·7 cites·11 claims
- 1630US4698860ASprayhead with built-in soap system for multi person washfountainsACORN ENG CO·Filed 1986·Granted Oct 13, 1987·2 cites·18 claims
- 1729US4580300ACombined wall construction form and plumbing fixture mounting device for fire rated wall constructionACORN ENG CO·Filed 1982·Granted Apr 8, 1986·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →