David W. Eckard — 2 Patents at Co-Tech Development

David W. Eckard has been granted 2 US patents while listed as an inventor at Co-Tech Development. The first was granted in 1988 and the most recent in September 2005. David W. Eckard ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David W. Eckard in Springfield, OH, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6948392	Inertia drive torque transmission level control and engine starter incorporating same	John M. Birkhimer	2005-09-27
4769995	Air-fuel ratio controller for a turbocharged internal combustion engine	J. Vincent Serve	1988-09-13	$4,927,000

David W. Eckard — 2 Patents

Issued Patents All Time

Patent Widget