Inventor · disambiguated record
Douglas A. Barth
Also filed as: BARTH DOUGLAS A
9 granted patents·220 citations·filing 1975–1988
89Inventor score
Files withAMERICAN LOCKER SECURITY SYST3AMERICAN LOCKER GROUP INC2AMERICAN LOCKER GROUP INCORPORATED2AMERICAN LOCKER CO1AMERICAN LOCKER SECURITY SYSTEMS INC1
Top patents by PatentIndex Score
9 records- 0195US4865248APost office lockerAMERICAN LOCKER GROUP INC·Filed 1988·Granted Sep 12, 1989·108 cites·5 claims
- 0294USD248138SLockerAMERICAN LOCKER SECURITY SYSTEMS INC·Filed 1976·Granted Jun 13, 1978·43 cites·1 claims
- 0384USD315996SSecurity cabinetAMERICAN LOCKER GROUP INCORPORATED·Filed 1987·Granted Apr 9, 1991·30 cites·1 claims
- 0459USD306428SControl console for security lockersAMERICAN LOCKER GROUP INCORPORATED·Filed 1987·Granted Mar 6, 1990·10 cites·1 claims
- 0559US3938640ACoin operated lockAMERICAN LOCKER CO·Filed 1975·Granted Feb 17, 1976·15 cites·2 claims
- 0637US4153150ACoin operated lockAMERICAN LOCKER SECURITY SYST·Filed 1977·Granted May 8, 1979·5 cites·8 claims
- 0734US4131191ACoin operated lockAMERICAN LOCKER SECURITY SYST·Filed 1977·Granted Dec 26, 1978·4 cites·7 claims
- 0831US4844228ACoin holding mechanism for coin operated lockerAMERICAN LOCKER GROUP INC·Filed 1988·Granted Jul 4, 1989·4 cites·7 claims
- 0927US4423805ARatchet escapement coin counterAMERICAN LOCKER SECURITY SYST·Filed 1981·Granted Jan 3, 1984·1 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →