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US Patent: 6,128
Steam Slide Valve
Short Slide-Valve by Chamfering Corners
Patentee:
James Mulbery (exact or similar names) - Parkersburg, Chester County, PA

USPTO Classifications:
137/625.25

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Feb. 20, 1849

Patent Pictures:
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