4. Traversing hoists
  5. Having means facilitating assembly or disassembly
  6. Of sectional vertical support from boom

Jack C. Marvin

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Mobil power source for producing welding current for automatic,

Electric heating – Metal heating – By arc
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Pedestal crane and method of assembling and erecting it

Traversing hoists – Having means facilitating assembly or disassembly – Of sectional vertical support from boom
Patent

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Profile ID: LFUS-PAI-P-239911

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