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Class Information
Number: 175/310
Name: Boring or penetrating the earth > With receptacle > With helical conveyer
Description: Apparatus in which the receptacle is provided with a conveyor or feed screw.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6769498 |
Method and apparatus for inducing under balanced drilling conditions using an injection tool attached to a concentric string of casing |
Aug. 3, 2004 |
| 6681872 |
In situ reactor |
Jan. 27, 2004 |
| 5655610 |
Auger cleaner |
Aug. 12, 1997 |
| 5224548 |
Apparatus and method for retrieving lost materials in slanted boreholes |
Jul. 6, 1993 |
| 5067570 |
Auger and retaining shell assembly |
Nov. 26, 1991 |
| 4790395 |
Pipe-driving apparatus |
Dec. 13, 1988 |
| 4228862 |
Apparatus for drilling holes in the ground |
Oct. 21, 1980 |
| 4210215 |
Rock drill with helical dust conveying groove |
Jul. 1, 1980 |
| 4156471 |
Rubble and core removal apparatus |
May. 29, 1979 |
| 3938598 |
Belling apparatus |
Feb. 17, 1976 |
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