RC

Ronald J. Calzone

📍 Dixon, MO: #1 of 4 inventorsTop 25%
🗺 Missouri: #4,278 of 23,789 inventorsTop 20%
Overall (All Time): #1,033,034 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
7249538 Manipulator for automatic screwdriver 2007-07-31
6543750 Protective cap for the top of metal fence posts 2003-04-08
5462249 Clamp for securing trailer ramp in transport position 1995-10-31
5145310 Reverse spring assist for trailer ramps 1992-09-08
4765785 Trailer drilling machine 1988-08-23