Marion E. Heller

📍 Lewistown, MT: #8 of 19 inventorsTop 45%

🗺 Montana: #987 of 3,198 inventorsTop 35%

Overall (All Time): #2,299,722 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5213169	Exploration-sampling drilling system	—	1993-05-25
5186266	Multi-walled drill string for exploration-sampling drilling systems	—	1993-02-16