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US Patent: 2,256,731
Means for forming and segregating rock chips from aggregates
Patentee:
George C. Winther - Minneapolis, MN

USPTO Classifications:
209/247, 209/257, 241/101.71, 241/152.2, 241/76, 241/80, 241/81

Tool Categories:

Assignees:
Diamond Iron Works, Inc. - Minneapolis, MN

Manufacturer:
Diamond Iron Works - Minneapolis, MN

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 10, 1938
Granted: Sep. 23, 1941

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Diamond Iron Works
Description:
The assignee also made sawmill machinery.

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