LH

Leonard J. Heavin

TM The Pittsburg & Midway Coal Mining: 1 patents #4 of 8Top 50%
📍 Olympia, WA: #2 of 6 inventorsTop 35%
🗺 Washington: #103 of 744 inventorsTop 15%
Overall (1982): #20,926 of 81,411Top 30%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4356078 Process for blending coal with water immiscible liquid Edward Earl King, Dennis L. Milliron 1982-10-26