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US Patent: 632,486
Automatic blast-regulator for glass-blowing furnaces
Patentee:
Henry Joseph Colburn (exact or similar names) - Toledo, OH

USPTO Classifications:
65/261, 65/300

Tool Categories:

Assignees:
Toledo Glass Co. - Toledo, OH

Manufacturer:
Not known to have been produced

Witnesses:
Henry C. Truesdall
W. H. Harrison
Patent Dates:
Applied: Oct. 28, 1897
Granted: Sep. 05, 1899

Patent Pictures:
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