Robert J. Glahn — 2 Patents at Geosource

Robert J. Glahn has been granted 2 US patents while listed as an inventor at Geosource. The first was granted in 1980 and the most recent in September 1981. Robert J. Glahn ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert J. Glahn in Tulsa, OK, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4286621	Dual acting check valve dampener	—	1981-09-01	$4,952,000
4184411	Seal ring for cylinder head of piston pumps	Dow V. Morris	1980-01-22

Robert J. Glahn — 2 Patents

Issued Patents All Time

Patent Widget