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US Patent: 137,717
Improvement in pipe-joints
Patentees:
George C. Morgan (exact or similar names) - Chicago, IL
Treat T. Prosser (exact or similar names) - Chicago, IL

USPTO Classifications:
285/146.2

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
O. W. Bond
E. A. West
Patent Dates:
Applied: Feb. 24, 1873
Granted: Apr. 08, 1873

Patent Pictures:
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