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GB Patent: GB-181,804,204
Method for forming tunnels or drifts under ground
Patentee:
Marc Isambard Brunel (exact or similar names) - Chelsea, county Middlesex, England

USPTO Classifications:

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jan. 20, 1818

Patent Pictures:
Espacenet patent
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