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US Patent: 1,819,431
Apparatus for forming scroll-edge metal blanks
Patentee:
Charles D. McDonald (exact or similar names) - Chicago, IL

USPTO Classifications:
414/19, 83/255, 83/278, 83/406, 83/418, 83/437.1, 83/620

Tool Categories:

Assignees:
McDonald Machine Co. - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 07, 1927
Granted: Aug. 18, 1931

Patent Pictures:
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