TUNNEL DRIVING MACHINE
United States Patent 3446535
US Patent References:
/0014483.html
- - 0014483
Mining machine
- - 2211751
Mining and loading machine with pivotally connected front and rear base sections
- - 2752143
Tunnel excavator having rotary cutters mounted upon a rotatable cutting head
- - 2760766
Mining machine with pivotally mounted and opposed elongated cutters
- - 3290095
/0014483.html
- - 0014483
Mining machine
- - 2211751
Mining and loading machine with pivotally connected front and rear base sections
- - 2752143
Tunnel excavator having rotary cutters mounted upon a rotatable cutting head
- - 2760766
Mining machine with pivotally mounted and opposed elongated cutters
- - 3290095
Inventors:
Lauber, Ernst
Publication Date:
05/27/1969
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Export Citation:
Assignee:
HABEGGER AG MASCHF
Primary Class:
Other Classes:
299/67, 299/71
International Classes:
E21D9/10; E21D9/11; E21D9/00