Inventor · disambiguated record
Donald L. Hildebrand
Also filed as: HILDEBRAND DONALD L · WASYNCZUK VICTOR
6 granted patents·115 citations·filing 1978–1982
85Inventor score
Files withELGIN SWEEPER CO6
Top patents by PatentIndex Score
6 records- 0167US4343060AHydraulic control system for a street sweeperELGIN SWEEPER CO·Filed 1980·Granted Aug 10, 1982·30 cites·10 claims
- 0264US4171551ASpring suspended street sweeper having rear axle spring lockoutELGIN SWEEPER CO·Filed 1978·Granted Oct 23, 1979·24 cites·15 claims
- 0357US4236756AStreet sweeper having an elevating hopper with supporting outriggersELGIN SWEEPER CO·Filed 1978·Granted Dec 2, 1980·18 cites·11 claims
- 0452US4178647AFour-wheeled sweeperELGIN SWEEPER CO·Filed 1978·Granted Dec 18, 1979·16 cites·20 claims
- 0548US4460186AGuide wheel suspension for a three wheel sweeperELGIN SWEEPER CO·Filed 1982·Granted Jul 17, 1984·15 cites·17 claims
- 0644US4222141AStreet sweeper and main broom suspensionELGIN SWEEPER CO·Filed 1979·Granted Sep 16, 1980·12 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →