Inventor · disambiguated record
Donald E. Ingermann
Also filed as: INGERMANN DONALD E
10 granted patents·294 citations·filing 1979–1991
92Inventor score
Top patents by PatentIndex Score
10 records- 0176US4510642ACombination bowling lane stripper and dusterCENTURY INT CO·Filed 1983·Granted Apr 16, 1985·44 cites·8 claims
- 0272US4246674AAutomatic bowling lane stripperCENTURY INT CO·Filed 1979·Granted Jan 27, 1981·37 cites·10 claims
- 0370USD281362SBowling lane dusterCENTURY INT CORP·Filed 1983·Granted Nov 12, 1985·14 cites·1 claims
- 0469US5063633AFluid handling apparatus for bowling lane cleaning deviceCENTURY INT CO·Filed 1990·Granted Nov 12, 1991·37 cites·11 claims
- 0569US4959884ACombination bowling lane stripper and dressing apparatusCENTURY INT CO·Filed 1990·Granted Oct 2, 1990·39 cites·12 claims
- 0663US4962565AAutomatic vacuum bowling lane stripperCENTURY INT CO·Filed 1989·Granted Oct 16, 1990·28 cites·21 claims
- 0759US5161277AVariable speed transfer roller for bowling lane dressing apparatusAMF BOWLING INC·Filed 1991·Granted Nov 10, 1992·28 cites·6 claims
- 0858US4920604AAutomatic vacuum bowling lane stripperCENTURY INT CO·Filed 1989·Granted May 1, 1990·25 cites·15 claims
- 0955US4856138ABowling lane vacuum with floating headCENTURY INT CO·Filed 1988·Granted Aug 15, 1989·24 cites·3 claims
- 1043US4757831AGolf club cleaning machineCENTURY INT CO·Filed 1987·Granted Jul 19, 1988·18 cites·9 claims
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