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US Patent: 2,474,683
Bending brake with adjustable work stop and clamping means
Patentee:
Victor F. Linder - Minneapolis, MN

USPTO Classifications:
72/319

Tool Categories:
metalworking machines : sheet metal : sheet metal brakes

Assignees:
Albert T. O'Neil - Minneapolis, MN

Manufacturer:
O'Neil-Irwin Manufacturing Co. - Lake City, MN

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 22, 1946
Granted: Jun. 28, 1949

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Di-Acro Inc.
Description:
This is the Di-Acro sheet metal brake; the maker eventually changed their name to Di-Acro Inc.

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