FB

Frank G. Bercha

DL Dome Petroleum Limited: 2 patents #1 of 6Top 20%
📍 Hearst, CA: #1 of 1 inventorsTop 100%
Overall (1982): #14,361 of 81,411Top 20%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4328760 Skirt construction J. Cam O'Rourke, G. Roger Pilkington 1982-05-11
4323322 Warm air canopy system for providing ice-free zone J. Cam O'Rourke, G. Roger Pilkington 1982-04-06