John E. Pertle — 6 Patents at Tri Tool

John E. Pertle has been granted 6 US patents while listed as an inventor at Tri Tool. The first was granted in 1980 and the most recent in September 1986. John E. Pertle ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list John E. Pertle in Garden Valley, CA, US.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #	Title	Co-Inventors	Date
4614136	Angularly adjustable mandrel assembly	—	1986-09-30
4422356	Cutting tool bit holder	—	1983-12-27
D264678	Pipe end preparation tool	Henry Astle	1982-06-01
4319503	Tube facing machine	Thomas W. Saine	1982-03-16
4246814	Elbow mandrel	—	1981-01-27
4207786	Cam follower tool arrangement	William H. Astle	1980-06-17

John E. Pertle — 6 Patents

Issued Patents All Time

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