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CA Patent: CA-174,679
Sheet metal blank production
Patentee:
Charles D. McDonald (exact or similar names) - Chicago, IL

USPTO Classifications:

Tool Categories:

Assignees:
Charles D. McDonald - Chicago, IL
McDonald Machine Co. - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 29, 1916
Granted: Jan. 23, 1917

Patent Pictures:
CIPO Data
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