David W. Berg

Person

Plymouth, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Variable diameter cleaning brush
- Patent number 6,125,495
- Issue date Oct 3, 2000
- Tennant Company
- David W. Berg
- A46 - BRUSHWARE
Information Patent Grant
Electromagnetic filter cleaning system
- Patent number 6,117,200
- Issue date Sep 12, 2000
- Tennant Company
- David W. Berg
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Curing of floor coatings using long and short wave ultraviolet radi...
- Patent number 6,096,383
- Issue date Aug 1, 2000
- Tennant Company
- David W. Berg
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Powered utility cart having engagement adapters
- Patent number 6,070,679
- Issue date Jun 6, 2000
- Lindbergh Manufacturing, Inc.
- David W. Berg
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Surface maintenance machine with improved dust collection system
- Patent number 5,940,929
- Issue date Aug 24, 1999
- Tennant Company
- David W. Berg
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Sweeper with hopper heat shield
- Patent number 5,884,353
- Issue date Mar 23, 1999
- Tennant Company
- David W. Berg
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Vacuum powered scrub head
- Patent number 5,088,149
- Issue date Feb 18, 1992
- Tennant Company
- David W. Berg
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Disc brush suspension for a floor maintenance machine
- Patent number 4,729,141
- Issue date Mar 8, 1988
- Tennant Company
- David W. Berg
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

David W. Berg

Person

Patents Grantslast 30 patents

Variable diameter cleaning brush

Electromagnetic filter cleaning system

Curing of floor coatings using long and short wave ultraviolet radi...

Powered utility cart having engagement adapters

Surface maintenance machine with improved dust collection system

Sweeper with hopper heat shield

Vacuum powered scrub head

Disc brush suspension for a floor maintenance machine