Mucking machine
United States Patent 2781140
US Patent References:
/1307009.html
- - 1307009
Lift truck
- - 2456320
Apparatus for use in shaft sinking
- - 2606679
Fluid pressure actuated articulated boom
- - 2639048
Electric control system for expansible motor operated boom
- - 2643515
/1307009.html
- - 1307009
Lift truck
- - 2456320
Apparatus for use in shaft sinking
- - 2606679
Fluid pressure actuated articulated boom
- - 2639048
Electric control system for expansible motor operated boom
- - 2643515
Inventors:
Cryderman, Warner L.
Publication Date:
02/12/1957
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Export Citation:
Assignee:
SHAFT MACHINES LTD
Primary Class:
International Classes:
E02F3/28; E02F3/413; E21D1/04; E02F3/40; E21D1/00
US Patent References:
| 2731163 | Ditching machine having swingably mounted clamshell bucket |