Orville B. Grovum

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Hawley, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Device for preventing jackknifing of a tractor-trailer rig
- Patent number 4,775,165
- Issue date Oct 4, 1988
- Orville B. Grovum
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS