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US Patent: 403,520
Device for Welding the Ends of Boiler Flues
Patentee:
James Cumming (exact or similar names) - Buffalo, Erie County, NY

USPTO Classifications:
228/44.3

Tool Categories:
specialty machines : welding apparatus

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 28, 1889
Granted: May 21, 1889

Patent Pictures:
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