Daniel Wayne Simpson — 3 Patents at Water Refining

Daniel Wayne Simpson has been granted 3 US patents while listed as an inventor at Water Refining. The first was granted in 1982 and the most recent in December 2017. Daniel Wayne Simpson ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Daniel Wayne Simpson in Lancaster, OH, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
9840259	Railway car window assemblies and assembly methods	Robert W. Lewis	2017-12-12
4416773	Valve mechanism for multiple distributor fluid treatment system	Stephen H. Davis	1983-11-22
4329225	Mixed bed deionizer	Stephen H. Davis	1982-05-11

Daniel Wayne Simpson — 3 Patents

Issued Patents All Time

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