Robert E. Ruthven — 2 Patents at Key Technology

Robert E. Ruthven has been granted 2 US patents while listed as an inventor at Key Technology. The first was granted in 1989 and the most recent in June 2001. Robert E. Ruthven ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert E. Ruthven in Milton-Freewater, OR, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6250471	Sorting apparatuses and sorting methods	Quentin Kemph	2001-06-26	$174,000
4830180	Article inspection and stabilizing system	W. Sheldon Ferguson, Howard E. Paulson	1989-05-16

Robert E. Ruthven — 2 Patents

Issued Patents All Time

Patent Widget