Self-propelled drilling machine
Case January 25, 1
U.S. patent number D267,719 [Application Number 06/159,203] was granted by the patent office on 1983-01-25 for self-propelled drilling machine. Invention is credited to Stanford E. Case.
| United States Patent | D267,719 |
| Case | January 25, 1983 |
Self-propelled drilling machine
Claims
The ornamental design for a self-propelled drilling machine, as shown and described.
| Inventors: | Case; Stanford E. (Los Altos Hills, CA) |
|---|---|
| Appl. No.: | 06/159,203 |
| Filed: | June 13, 1980 |
| Current U.S. Class: | D15/21 |
| Current International Class: | D1504 |
| Field of Search: | ;D15/21 ;175/52 ;173/25,27,28 |
Other References
|
Rock Products, 3/80, p. 7, Drilling Rig. . Rock Products, 1/77, p. 71, Drilling Rig. No. 501, top right side of page.. |
Primary Examiner: Gandy; James M.
Attorney, Agent or Firm: Flehr, Hohbach, Test, Albritton & Herbert
Description
FIG. 1 is a left side elevational view of a self-propelled drilling machine showing my new design;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a front elevational view thereof; and
FIG. 5 is a top plan view thereof.
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