William D. Duwe

SS Seismograph Service: 1 patents #2 of 7Top 30%

TD Tdw Delaware: 1 patents #72 of 133Top 55%

Overall (All Time): #2,288,600 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5439331	High pressure tapping apparatus	Bill D. Andrew, Michael L. Wilson	1995-08-08
4815557	Down hole seismographic source	—	1989-03-28