Knurling tool for internal cylindrical surfaces
United States Patent 2618182
Inventors:
Teetor, Ralph R.
Publication Date:
11/18/1952
Assignee:
PERFECT CIRCLE CORP
Other Classes:
72/703, 29/888.060, 72/126, 29/DIG.023, 29/888.041, 29/523
International Classes:
B21H7/14; B21H7/00
Foreign References:
| GB188412341A | | | | |
| SE84261A | | | | |
| GB555237A | | | | |