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US Patent: 1,617,621
Device for making ring joint
Patentee:
William L. Evans (exact or similar names) - Washington, IN

USPTO Classifications:
144/136.1, 144/136.9, 144/150, 144/24.15

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Feb. 15, 1927

Reissue Information:
Reissued as RE17,786 (Sep. 02, 1930)

Patent Pictures:
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