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The ornamental design for a rock drill bit, as shown and described.
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FIG. 1 is a front view of a rock drill bit in accordance with my design;
FIG. 2 is a right side view thereof;
FIG. 3 is plan top view thereof;
FIG. 4 is a perspective view thereof;
FIG. 5 is a plan bottom plan view thereof; and,
FIG. 6 is a rear view thereof.
Hamilton, Charles, Hamilton, Gary Wayne
| Patent | Priority | Assignee | Title |
| 6619413, | Apr 24 1998 | GATOR ROCK BIT, INC | Flightless rock auger for use with pressure drills with quick attachment and method of use |
| 7131506, | Apr 24 1998 | GATOR ROCK BIT, INC | Flightless rock auger for use with pressure drills with quick attachment and method of use |
| 9249631, | Sep 30 2011 | Terex USA, LLC | Extendable pilot bit for barrel cutter |
| 9677360, | Sep 30 2011 | Terex USA, LLC | Extendable pilot for barrel cutter |
| D831714, | May 29 2015 | EPIROC DRILLING TOOLS AKTIEBOLAG | Rock drill bit |
| D888778, | Feb 06 2019 | Lawn seed spike |
| Patent | Priority | Assignee | Title |
| 3047082, | |||
| 4598779, | Sep 20 1983 | Santrade Limited | Rock drill bit |
| 5150636, | Jun 28 1991 | LOUNDON ENTERPRISES, INC , A CORP OF PA | Rock drill bit and method of making same |
| D282666, | Sep 27 1982 | OY TAMPELLA AB PL 256 | Shank adaptor for a rock drill |
| D441380, | Jun 16 2000 | GATOR ROCK BITS, INC | Rock drill bit |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jan 31 2001 | Gator Rock Bits, Inc. | (assignment on the face of the patent) | / | |||
| Jan 28 2002 | HAMILTON, GARY WAYNE | GATOR ROCK BITS, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 012679 | /0396 | |
| Jan 28 2002 | HAMILTON, CHARLES | GATOR ROCK BITS, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 012679 | /0396 |
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