FM

Frederic E. Marcel

CF Charbonnages De France: 2 patents #14 of 57Top 25%
📍 Verneuil-en-Halatte, FR: #5 of 13 inventorsTop 40%
Overall (All Time): #2,348,327 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4624339 Sound-proofing casing for a pneumatic percussive drill Francois J. M. Maume 1986-11-25
4591009 Drill soundproofing device Francois J. M. Maume 1986-05-27