RG

Richard H. Grappendorf

CH Christensen: 1 patents #3 of 7Top 45%
📍 Riverton, UT: #1 of 1 inventorsTop 100%
🗺 Utah: #32 of 283 inventorsTop 15%
Overall (1982): #36,641 of 81,411Top 50%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4352400 Drill bit Gordon G. Sirrine, John S. Davis 1982-10-05