Automatically counterbalanced tractor side-boom crane
United States Patent 3266636
US Patent References:
/1195058.html
- - 1195058
Counterweight for hoisting machinery
- - 2261870
Automatic counterbalance for boom derricks
- - 2408500
Side boom attachment for tractors
- - 2722320
Side boom attachment for tractors
- - 2991890
/1195058.html
- - 1195058
Counterweight for hoisting machinery
- - 2261870
Automatic counterbalance for boom derricks
- - 2408500
Side boom attachment for tractors
- - 2722320
Side boom attachment for tractors
- - 2991890
Inventors:
John, Dorn Russell
Publication Date:
08/16/1966
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Export Citation:
Assignee:
ARROW MFG COMPANY
Primary Class:
Other Classes:
414/719
International Classes:
B66C23/44; B66C23/76; B66C23/00
Foreign References:
| FR1168351A |