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Darrell D. Cole

PCProctor Consulting: 1 patents #6 of 9Top 70%
Newberg, OR: #159 of 252 inventorsTop 65%
Oregon: #17,068 of 28,073 inventorsTop 65%
Overall (All Time): #4,046,721 of 4,157,543Top 100%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4367376 Electronic telephone ringer including anti-bell tap provisions D. Frederic Proctor 1983-01-04

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