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David Coffman — 2 Patents

VAValenite: 1 patents #34 of 66Top 55%
Glendora, CA: #139 of 353 inventorsTop 40%
California: #187,151 of 386,348 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
David Coffman has been granted 2 US patents while listed as an inventor at Valenite. The first was granted in 1990 and the most recent in May 1999. David Coffman ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David Coffman in Glendora, CA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D409633 Polygonal indexable cutting insert Thomas J. Bernadic, Sanjay Sarnaik 1999-05-11
D306131 Illuminated holder for combination padlocks — 1990-02-20

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