Number | Name | Date | Kind |
---|---|---|---|
D. 415774 | Wakai | Oct 1999 | |
1466378 | McLaughlin | Aug 1923 | |
2903921 | Andreasson | Sep 1959 | |
3991454 | Wale | Nov 1976 | |
4602900 | Arpaio, Jr. et al. | Jul 1986 | |
4744705 | Imanaga | May 1988 | |
6089337 | Kleine et al. | Jul 2000 | |
6113321 | Mulroy et al. | Sep 2000 | |
6190097 | Thomas | Feb 2001 |
Number | Date | Country |
---|---|---|
948624 | Aug 1982 | SU |
Entry |
---|
Brooke Cutting Tools, Inc. catalog, “UD TWIST DRILLS”, 4 pp., undated. |
SGS HI-PERCARB™ High PerformanceCarbide Drill Catalog EDP No. 00044 entitled “Increase production rates up to 12 times over conventional carbide drills”, 4 pp.., ©1998 SGS Tool Company. |