Richard B. DeVisser — 3 Patents at Dover Associates

Richard B. DeVisser has been granted 3 US patents while listed as an inventor at Dover Associates. The first was granted in 1980 and the most recent in February 1987. Richard B. DeVisser ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Richard B. DeVisser in Manistique, MI, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4642188	Backwash apparatus for multi element filter unit	Sydney Hagerty	1987-02-10	$12,419,000
4297209	High solids filter	John W. Rishel, Joe A. Kuiper	1981-10-27	$6,269,000
4218926	Isolating pressure sensor	—	1980-08-26	$5,273,000

Richard B. DeVisser — 3 Patents

Issued Patents All Time

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