DS

Donald S. Seiford, Sr.

📍 Inver Grove Heights, MN: #57 of 287 inventorsTop 20%
🗺 Minnesota: #9,275 of 52,454 inventorsTop 20%
Overall (All Time): #643,337 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
9695585 Portable domed storm shelter 2017-07-04
8162253 Convertible vehicle for road, air, and water usage 2012-04-24
7284495 Shaftless radial vane rotary device and a marine propulsion system using the device 2007-10-23
7090553 Paddle wheel propulsion system and improved paddle used therewith 2006-08-15
6976444 Marine vessel propulsion and tubular rudder system 2005-12-20
5213528 Paddle wheel for a ship 1993-05-25
4926755 Rail car moving system 1990-05-22
4815887 Connector with a locking mechanism and connector box therefor 1989-03-28