Robert D. Ewing — 1 Patent at Holophane

Robert D. Ewing has been granted 1 US patent while listed as an inventor at Holophane. All of these patents were granted in 1993. Robert D. Ewing ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Robert D. Ewing in Newark, OH, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D332503	Luminaire	Peter A. Koloski, Robert J. Hayes, Richard J. Malecha, David G. Meredith	1993-01-12

Robert D. Ewing — 1 Patent

Issued Patents All Time

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