Donald L. Hildebrand

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Union, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Guide wheel suspension for a three wheel sweeper
- Patent number 4,460,186
- Issue date Jul 17, 1984
- Elgin Sweeper Company
- Donald L. Hildebrand
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Hydraulic control system for a street sweeper
- Patent number 4,343,060
- Issue date Aug 10, 1982
- Elgin Sweeper Company
- Donald L. Hildebrand
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Street sweeper having an elevating hopper with supporting outriggers
- Patent number 4,236,756
- Issue date Dec 2, 1980
- Elgin Sweeper Company
- Donald L. Hildebrand
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Street sweeper and main broom suspension
- Patent number 4,222,141
- Issue date Sep 16, 1980
- Elgin Sweeper Company
- Gerald N. Kieft
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Four-wheeled sweeper
- Patent number 4,178,647
- Issue date Dec 18, 1979
- Elgin Sweeper Company
- John J. Wolynec
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Spring suspended street sweeper having rear axle spring lockout
- Patent number 4,171,551
- Issue date Oct 23, 1979
- Elgin Sweeper Company
- Donald L. Hildebrand
- B60 - VEHICLES IN GENERAL