John Erwin Treft — 3 Patents at Tkf Incorporated

John Erwin Treft has been granted 3 US patents while listed as an inventor at Tkf Incorporated. The first was granted in 2007 and the most recent in June 2011. John Erwin Treft ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list John Erwin Treft in Lancaster, OH, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
7963388	Spline roller for a belt-driven roller conveyor, and method for making	Ronald L. Eubanks	2011-06-21
7882944	Drive belt guard for a roller conveyor	Ronald L. Eubanks	2011-02-08
7306091	Tapered spline roller for curved roller conveyor	Ronald L. Eubanks	2007-12-11

John Erwin Treft — 3 Patents

Issued Patents All Time

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