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US Patent: 1,144,094
Water-circulation system for subways
Patentee:
Wendell A. Barker (exact or similar names) - Chicago, IL

USPTO Classifications:
137/236.1, 137/563

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. G. Latimer
Samuel N. Pond

Patent Dates:
Applied: Feb. 11, 1915
Granted: Jun. 22, 1915

Patent Pictures:
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