Robert D. Walker — 8 Patents at Endotronics

Robert D. Walker has been granted 8 US patents while listed as an inventor at Endotronics. The first was granted in 1986 and the most recent in May 2014. Robert D. Walker ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Robert D. Walker in Ham Lake, MN, US.

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8714598	Hydraulic fluid coupling comprising an inline swivel joint	Stephan E. Bohner	2014-05-06
8075031	HVAC filter changing system	—	2011-12-13
6355435	Methods for detecting and enumerating Campylobacter jejuni in environmental samples and for identifying antibiotic-resistant strains	David L. Wilson, John E. Linz, John B. Kaneene, Linda S. Mansfield, Thomas C. Newman	2002-03-12
5590482	Excavator and earthen material excavator bucket apparatus	Randy S. Peterson, Thomas Steele	1997-01-07
D372886	Roadrunner golf trophy	—	1996-08-20
D333760	Combined top pie crust sealer and trimmer	—	1993-03-09
4804628	Hollow fiber cell culture device and method of operation	Ray Cracauer, Micheal Gruenberg	1989-02-14	$463,000
4618586	Apparatus for administering a controlled dosage of a chemical substance having an improved culture chamber	—	1986-10-21	$3,398,000

Robert D. Walker — 8 Patents

Issued Patents All Time

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