Donald A. Pettifer

📍 Valleyview, CA: #2 of 5 inventorsTop 40%

Overall (All Time): #3,865,474 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5171110	Apparatus and method for counterboring a pipe	William B. Pettifer	1992-12-15