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US Patent: AI163
Closing hatches and vertical doors
Patentees:
William H. Thompson (exact or similar names) - Unknown, Unknown
Eustis P. Morgan (exact or similar names) - Unknown, Unknown

USPTO Classifications:
187/333

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Apr. 14, 1857

Patent Pictures:
USPTO (New site tip)
Google Patents
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