Control means for multiple hydraulic jacks
United States Patent 2499563
US Patent References:
/0833457.html
- - 0833457

/1056194.html
- - 1056194

Hydraulic cartridge
- - 1358767

Motor-operated gate valve
- - 1616841

Machine tool
- - 1744885


Inventors:
Bill, Robert O.
Publication Date:
03/07/1950
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Assignee:
Bill, Robert O.
Primary Class:
60/547.100
Other Classes:
417/425, 60/584, 254/423, 60/581, 425/25, 425/451.200, 60/580, 60/402
International Classes:
B66F3/46; B66F3/00
US Patent References:
1911918Lifting and lowering apparatus
2193125Hydraulic operating device
2381664Hydraulic lift