Title:
Rock driling machine
United States Patent 3203737
US Patent References:
/0551508.html
- - 0551508
Tunneling machine
- - 2083834
Feeding means for rotary head tunneling machine
- - 3061287
Steering means for rotary head tunneling machine
- - 3061288
/0551508.html
- - 0551508
Tunneling machine
- - 2083834
Feeding means for rotary head tunneling machine
- - 3061287
Steering means for rotary head tunneling machine
- - 3061288
Inventors:
Robbins, Richard J.
Winberg, Douglas F.
John, Galgoczy
Winberg, Douglas F.
John, Galgoczy
Publication Date:
08/31/1965
View Patent Images:
Export Citation:
Assignee:
ROBBINS & ASSOC JAMES S
Primary Class:
Other Classes:
299/58, 299/56, 173/35
International Classes:
E21D9/10; E21D9/11
Foreign References:
| GB852537A |