Title:
Indicator for determining the boom angularity of a crane
United States Patent 3223249

Inventors:
Cady, Ivan E.
Publication Date:
12/14/1965
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Assignee:
Cady, Ivan E.
Primary Class:
212/280
Other Classes:
182/18, 33/366.260, 340/685, 212/282, 33/346
International Classes:
B66C23/90; B66C23/00
Foreign References:
CA464585A