John R. Laughlin — 3 Patents at Tocco

John R. Laughlin has been granted 3 US patents while listed as an inventor at Tocco. The first was granted in 1980 and the most recent in March 1988. John R. Laughlin ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list John R. Laughlin in Brecksville, OH, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4728761	Method and apparatus for hardening axially spaced cams on a camshaft	George M. Mucha, William Z. Nelson, Robert C. Johnson	1988-03-01
4604510	Method and apparatus for heat treating camshafts	George M. Mucha	1986-08-05
4184798	Workpiece rotating and feeding apparatus	—	1980-01-22	$477,000

John R. Laughlin — 3 Patents

Issued Patents All Time

Patent Widget