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US Patent: 65,726
Improvement in combined level and plumb
Patentee:
Patrick Clifford (exact or similar names) - Holyoke, MA

USPTO Classifications:
33/388

Tool Categories:
layout tools : levels

Assignees:
None

Manufacturer:
Unknown

Witnesses:
W. BC Pearsons
J. P. Buckland
Patent Dates:
Granted: Jun. 11, 1867

Patent Pictures: [ 1 | 2 ]
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Description:
One of these appeared in a Martin J. Donnelly auction

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