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| United States Patent | 6,065,372 |
| Vern Rauch | May 23, 2000 |
| Inventors: | Rauch; Vernon (Garden Valley, ID) |
| Appl. No.: | 09/089,750 |
| Filed: | June 2, 1998 |
| Current U.S. Class: | 81/57.15 ; 81/57.2; 81/57.33 |
| Current International Class: | E21B 19/16 (20060101); E21B 19/00 (20060101); B25B 017/00 () |
| Field of Search: | 81/57.15,57.11,57.2,57.33,57.42 |
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| Patent Application: | CA 2376577 |
| Inventors: (Country) | RAUCH, VERNON (United States) |
| Owners: (Country) | RAUCH, VERNON (United States) |
| Applicants: (Country) | RAUCH, VERNON (United States) |