John C. Leask — 3 Patents at Engineering Dynamics

John C. Leask has been granted 3 US patents while listed as an inventor at Engineering Dynamics. The first was granted in 1981 and the most recent in October 1993. John C. Leask ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list John C. Leask in Dunstable, MA, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5254061	Eddy current braking system	—	1993-10-19
5031900	Eddy current braking system	—	1991-07-16
4250392	Bi-focal collimator	John W. Leask, Harry W. Straus	1981-02-10

John C. Leask — 3 Patents

Issued Patents All Time

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