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| Patents for B60B 39 - Increasing wheel adhesion (916) |
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| 01/30/1979 | US4137356 Non-skid place mat and the like | | 01/09/1979 | US4133481 Anti-skid device for vehicles | | 01/09/1979 | US4133480 Convenience anti-wheel spin device for rubber tired vehicles including a winching accessory | | 10/24/1978 | US4121765 Ice mat | | 09/19/1978 | US4114932 Motor vehicle wheel track sanding device | | 12/20/1977 | US4063606 Anti-hydroplaning device | | 12/06/1977 | US4061268 Traction mat | | 10/18/1977 | US4054304 Traction arms for vehicle anti-skid device | | 10/18/1977 | US4054187 Wheel-braking device for motor vehicles | | 08/23/1977 | US4043577 Sanding device for increased vehicle traction | | 08/16/1977 | US4042059 Anti-spin control system | | 07/19/1977 | US4036516 Sand dispensing device for a motor vehicle | | 03/15/1977 | US4012062 Sanding device for a motor vehicle | | 12/14/1976 | US3997110 Anti-slipping accessory for traction wheel | | 04/06/1976 | US3948333 Monocycle | | 02/17/1976 | US3938835 Double action winter road conditioner apparatus |
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