William B. Plummer — 2 Patents at IBM

William B. Plummer has been granted 2 US patents while listed as an inventor at IBM. The first was granted in 1980 and the most recent in March 1986. William B. Plummer ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list William B. Plummer in Rochester, MN, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4578722	Method for checking disk identity in a flexible disk recorder	Jeffrey L. Lovgren	1986-03-25	$14,275,000
4226570	Blocker for magnetic diskette gripper	Joseph J. Holecek, Clarence R. Schwieters, Michael N. Zell	1980-10-07	$21,028,000

William B. Plummer — 2 Patents

Issued Patents All Time

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