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Richard Donald Umphress

IBM: 1 patents #1,061 of 3,557Top 30%
🗺 California: #4,598 of 17,285 inventorsTop 30%
Overall (1997): #87,786 of 185,788Top 50%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5629682 Magnetic recorder having MR read and inductive write capability Todd Hylton 1997-05-13