Inventor
MITCHELL HOWARD E
US8 patents
⚠️ This page may combine multiple inventors who share the name “MITCHELL HOWARD E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DRESSER IND
6 patentsUS4194578AMar 25, 1980
Raise boring head with retractable gage cutters
DRESSER IND8 citations72
US4179000ADec 18, 1979
Self-cleaning raise boring head system
DRESSER IND13 citations72
US4177866ADec 11, 1979
System for boring raises having portions of different diameters
DRESSER IND17 citations72
US4161225AJul 17, 1979
Skewed inserts for an earth boring cutter
DRESSER IND9 citations72
US3993147ANov 23, 1976
Taper lock removable stem for raise bit
DRESSER IND13 citations72
US4186809AFeb 5, 1980
Steep angle raise bit
DRESSER IND0 citations40