Patents/Inventors

Douglas B. Campbell

Waikoloa, HIUS4 patents

5 Patents

US123313722025
Steel Compositions, Methods of Manufacture and Uses in Producing Rimfire Cartridges
GREER STEEL COMPANY
0 cites
US120427142024
Basketball Training System
Airborne Athletics, Inc.
0 cites
US119055692024
Steel Compositions, Methods of Manufacture and Uses in Producing Rimfire Cartridges
GREER STEEL COMPANY
0 cites
US118905212024
Basketball Training System
Airborne Athletics, Inc.
0 cites
US115771392023
Basketball Training System
Airborne Athletics, Inc.
0 cites