John W. Leask — 2 Patents at Engineering Dynamics

John W. Leask has been granted 2 US patents while listed as an inventor at Engineering Dynamics. The first was granted in 1981 and the most recent in May 1990. John W. Leask ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list John W. Leask in Carlisle, MA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4927136	Braking system for exercise apparatus	—	1990-05-22
4250392	Bi-focal collimator	John C. Leask, Harry W. Straus	1981-02-10

John W. Leask — 2 Patents

Issued Patents All Time

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