DS

David B. Shaffer

📍 Annapolis, MD: #74 of 661 inventorsTop 15%
🗺 Maryland: #4,710 of 35,612 inventorsTop 15%
Overall (All Time): #732,621 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
9713908 Super compaction of biomass and other carbon-containing materials to high energy content fuels 2017-07-25
8021445 Upgrading carbonaceous materials 2011-09-20
D449407 Applicator for applying a viscous fluid Richard M. Altobellis, Douglas K. Ewald, John L. Knight, Jr. 2001-10-16
D447279 Lotion applicator with hinged handle Richard M. Altobellis, Douglas K. Ewald, John L. Knight, Jr. 2001-08-28
6261014 Apparatus for applying a viscous lotion Richard M. Altobellis, Douglas K. Ewald, John L. Knight, Jr. 2001-07-17
5235341 Method and system for measuring the position of lightning strokes John E. Effland, John M. Gipson, John C. Webber 1993-08-10
5008679 Method and system for locating an unknown transmitter John E. Effland, John M. Gipson, John C. Webber 1991-04-16