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US Patent: 470,912
Calipers
Patentee:
William F. Durand (exact or similar names) - Lansing, MI

USPTO Classifications:
33/203.16, 33/550, 33/555.1, 33/557

Tool Categories:
layout tools : calipers
layout tools : special purpose gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. H. Van Dewoort
W. A. Hamilton

Patent Dates:
Applied: Apr. 24, 1891
Granted: Mar. 15, 1892

Patent Pictures:
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