Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DL

David J. Littrell

PIPrecor Incorporated: 6 patents #21 of 108Top 20%
WUWoodway Usa: 1 patents #19 of 20Top 95%
Mukilteo, WA: #57 of 399 inventorsTop 15%
Washington: #13,001 of 76,902 inventorsTop 20%
Overall (All Time): #615,864 of 4,157,543Top 15%
8 Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
D1044135 Hip protector Parker Benzie, Weston Van Wembeke 2024-09-24
D826349 Recumbent cycle with provision for upper body exercise Nicholas A. Oblamski, Kasey Mylin, Cole Dalton, Douglas G. Bayerlein 2018-08-21
D388847 Cross training exerciser Janine Whan-Tong, Peter Pasero, Timothy O. Armstrong 1998-01-06
D385258 Weighted hand-controller for remote control of exercise apparatus 1997-10-21
D347039 Recumbent exercise cycle Kenneth G. Real 1994-05-17
D328625 Climbing exerciser Brian A. Arthur, Lawrence J. Graf, James S. Birrell 1992-08-11
D321734 Low impact treadmill Paul T. Dunham, Timothy O. Armstrong 1991-11-19
D321229 Full body exercise climber Cole Dalton, Timothy O. Armstrong 1991-10-29