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US Patent: 909,068
Extension Rule
Patentees:
Clifford K. Denman (exact or similar names) - Greeley, Weld County, CO
William H. Murphy (exact or similar names) - Greeley, Weld County, CO

USPTO Classifications:
33/809, 403/104

Tool Categories:
rules : extensible rules

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Dec. 20, 1907
Granted: Jan. 05, 1909

Patent Pictures:
USPTO (New site tip)
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