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US Patent: 844,536
Extensible Rule and Calipers
Patentee:
Henry U. Prindle (exact or similar names) - San Francisco, San Francisco County, CA

USPTO Classifications:
235/70R, 33/809

Tool Categories:
rules : extensible rules
layout tools : calipers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 27, 1905
Granted: Feb. 19, 1907

Patent Pictures:
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