Inventor record

CAMPBELL WILLIS R

This page previously combined 3different people who filed under the same name. Pick the inventor you're looking for — each profile now covers one disambiguated person.

• 99Willis R. Campbell54 patent records·836 citations·A01F A01D B01D52 on this record
• 91John H. Freimuth11 patent records·156 citations·A01F1 on this record
• 90T. William Waldrop10 patent records·187 citations·A01F A01D B65G1 on this record

Inventor identities via PatentsView disambiguation — see methodology.