DL

David J. Logan

GW Gulf & Western: 1 patents #1 of 9Top 15%
KR Koh-I-Noor Rapidograph: 1 patents #1 of 4Top 25%
📍 Westminster, CO: #1 of 10 inventorsTop 10%
🗺 Colorado: #33 of 721 inventorsTop 5%
Overall (1982): #15,218 of 81,411Top 20%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4363330 Method, system and apparatus for cutting profiles from natural leaves Robert I. Sinclair, Verner Anderson, Leonard G. Rich 1982-12-14
4346445 Portable alphanumeric and symbol drafting device Jean P. Leuenberger, Clifford A. Scorso, Jr. 1982-08-24