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US Patent: 2,503,590
Truck crane
Patentee:
Arwin E. Ormsby - Oakland, CA

USPTO Classifications:
212/292

Tool Categories:
construction machines : cranes : jib cranes

Assignees:
Lucienne M. Ormsby - Oakland, CA

Manufacturer:
Blue Heron Crane Co. - Oakland, CA

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 02, 1947
Granted: Apr. 11, 1950

Patent Pictures:
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Description:
This patent and 2,549,120, "other patents pending", were seen on a Model 50 Blue Heron Crane from Blue Heron Crane Co.

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