William N. Schoeffler

📍 Lafayette, LA: #2 of 55 inventorsTop 4%

🗺 Louisiana: #21 of 638 inventorsTop 4%

Overall (2002): #18,602 of 266,432Top 7%

Patents 2002

Issued Patents 2002

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
6488092	By-pass valve	—	2002-12-03
6457541	Surface controlled by-pass valve	—	2002-10-01
6364034	Directional drilling apparatus	—	2002-04-02