Boulder 12 Investments

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Boulder, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Remote-activated, power shift clutch assembly with positive locking
- Patent number 5,123,513
- Issue date Jun 23, 1992
- Boulder 12 Investments
- Harry A. Petrak
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Remote-activated, power shift clutch assembly
- Patent number 5,044,479
- Issue date Sep 3, 1991
- Boulder 12 Investments
- Harry A. Petrak
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Ground clutch assembly with dynamic engagement and disengagement
- Patent number 4,694,943
- Issue date Sep 22, 1987
- Boulder 12 Investments
- Harry A. Petrak
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Force-responsive shock absorbing apparatus
- Patent number 4,396,098
- Issue date Aug 2, 1983
- Boulder 12 Investments
- Harry A. Petrak
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...