Thorvald G. Granryd

Person

Lake Forest, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Heavy duty traction intensifyer including flexible frame means with...
- Patent number 5,692,810
- Issue date Dec 2, 1997
- Thorvald G. Granryd
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Traction enhancing device including flexible frame means for agricu...
- Patent number 5,242,214
- Issue date Sep 7, 1993
- Omitrac Corporation
- Thorvald G. Granryd
- B60 - VEHICLES IN GENERAL
Information Patent Grant
High performance drive tire arrangement for agricultural tractors
- Patent number 4,694,872
- Issue date Sep 22, 1987
- Thorvald G. Granryd
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Lightweight retractable track-wheel for agricultural tractors and t...
- Patent number 4,603,916
- Issue date Aug 5, 1986
- Thorvald G. Granryd
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Retractable traction intensifying means for agricultural tractors a...
- Patent number 4,508,150
- Issue date Apr 2, 1985
- TG Strips, Inc.
- Thorvald G. Granryd
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Lightweight traction intensifying means for agricultural wheeled tr...
- Patent number 4,402,357
- Issue date Sep 6, 1983
- Thorvald G. Granryd
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Low cost vehicle traction device employing pivotally mounted anchor...
- Patent number 4,326,668
- Issue date Apr 27, 1982
- Thorvald G. Granryd
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Combination winch and traction intensifier for rubber tired vehicles
- Patent number 4,224,972
- Issue date Sep 30, 1980
- Thorvald G. Granryd
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Low cost vehicle traction device employing pivotally mounted anchor...
- Patent number 4,225,082
- Issue date Sep 30, 1980
- Thorvald G. Granryd
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Convenience anti-wheel spin device for rubber tired vehicles includ...
- Patent number 4,133,480
- Issue date Jan 9, 1979
- Thorvald G. Granryd
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Four sprocket wheel drive system for track-type vehicle
- Patent number 4,068,732
- Issue date Jan 17, 1978
- Thorvald G. Granryd
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Thorvald G. Granryd

Person

Patents Grantslast 30 patents

Heavy duty traction intensifyer including flexible frame means with...

Traction enhancing device including flexible frame means for agricu...

High performance drive tire arrangement for agricultural tractors

Lightweight retractable track-wheel for agricultural tractors and t...

Retractable traction intensifying means for agricultural tractors a...

Lightweight traction intensifying means for agricultural wheeled tr...

Low cost vehicle traction device employing pivotally mounted anchor...

Combination winch and traction intensifier for rubber tired vehicles

Low cost vehicle traction device employing pivotally mounted anchor...

Convenience anti-wheel spin device for rubber tired vehicles includ...

Four sprocket wheel drive system for track-type vehicle