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US Patent: 13,725
Car Ventilator
Veniilating Railroad-Cars
Patentee:
H. L. B. Lewis (exact or similar names) - Philadelphia, PA

USPTO Classifications:
160/DIG.12, 454/98

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Ben Morison
John B. Kenney
Patent Dates:
Granted: Oct. 30, 1855

Patent Pictures:
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