DH

Donald A. Henrich

OM Outboard Marine: 4 patents #94 of 426Top 25%
📍 Lake Villa, IL: #71 of 228 inventorsTop 35%
🗺 Illinois: #21,447 of 84,256 inventorsTop 30%
Overall (All Time): #1,304,884 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4778419 Reverse thrust propeller Robert Bolle 1988-10-18
4447214 Anti-ventilation means for marine gear case 1984-05-08
4304557 Hydro torque skeg foil 1981-12-08
4211515 Marine propeller fish line and weed cutter Edgar Rose 1980-07-08