HP

Harry A. Petrak

TG Tenneco Gmbh: 3 patents #38 of 205Top 20%
📍 Boulder, CO: #701 of 5,018 inventorsTop 15%
🗺 Colorado: #4,613 of 40,980 inventorsTop 15%
Overall (All Time): #528,146 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
5123513 Remote-activated, power shift clutch assembly with positive locking 1992-06-23
5044479 Remote-activated, power shift clutch assembly 1991-09-03
4694943 Ground clutch assembly with dynamic engagement and disengagement 1987-09-22
4557358 Synchronized clutch assembly with selective override for four-wheel drive vehicles 1985-12-10
4396098 Force-responsive shock absorbing apparatus 1983-08-02
4378868 Live spindle wheel assembly with torque responsive drive engagement means 1983-04-05
4331210 Live spindle vehicle drive wheel assembly with axially moveable axle 1982-05-25
4287972 Automatic clutch assembly 1981-09-08
4262785 Torque responsive hub clutch Larry B. Anderson, Clark J. Hamkins, David V. Schaefer 1981-04-21
4238014 Automatic locking gear for four wheeled drive vehicles 1980-12-09