DD

Douglas A. Doers

DE Deltahawk Engines: 6 patents #1 of 13Top 8%
Overall (All Time): #634,611 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
10711681 Two-cycle diesel engine configured for operation with high temperature combustion chamber surfaces Robert A. Greco, Paul Olesen, Dennis Raymond Webb 2020-07-14
10458307 Two-cycle diesel engine configured for operation with high temperature combustion chamber surfaces Robert A. Greco, Paul Olesen, Dennis Raymond Webb 2019-10-29
8371279 Crankcase pressure regulator for an internal combustion engine 2013-02-12
7836815 Lubricant-cooled and wristpin lubricating piston David Delory Driscoll, JR. 2010-11-23
RE41335 Internal combustion engine 2010-05-18
RE40500 Internal combustion engine Dean Bergman 2008-09-16
6769383 Internal combustion engine Dean Bergman 2004-08-03
6622667 Internal combustion engine 2003-09-23