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US Patent: 1,031,540
Attachment for carpenters braces
Patentee:
Peter R. Duchemin (exact or similar names) - Spokane, WA

USPTO Classifications:
81/36

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jul. 02, 1912

Patent Pictures:
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Description:
Speed adjustment.

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