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US Patent: 1,513,425
Air-heating attachment for furnaces
Patentee:
David Wentworth Robb (exact or similar names) - Amherst, NS Canada

USPTO Classifications:
110/175R

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: May 15, 1922
Granted: Oct. 28, 1924

Patent Pictures:
USPTO (New site tip)
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