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US Patent: 17,892
Machinery for Raising Sunken Vessels
Mode of Raising Sunken Vessels
Patentee:
John Ponton (exact or similar names) - New York, NY

USPTO Classifications:
114/46, 114/49

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Charles H. Haswell
E. H. Haswell
Patent Dates:
Granted: Jul. 28, 1857

Patent Pictures:
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