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US Patent: 1,604,776
Valve
Patentee:
Franklin Hardinge - Chicago, IL

USPTO Classifications:
137/242, 251/249.5, 251/360

Tool Categories:
industrial furnaces
specialty machines : industrial furnaces

Assignees:
Hardinge Brothers, Inc. - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 02, 1921
Granted: Oct. 26, 1926

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Hardinge Brothers

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