GC

Georges A. Cagnioncle

CF Charbonnages De France: 1 patents #24 of 57Top 45%
Overall (All Time): #2,354,502 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4535853 Drill bit for jet assisted rotary drilling Serge Ippolito 1985-08-20
4359115 Novel rotary drill bits and drilling process 1982-11-16