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US Patent: 1,512,728
Spring Joint for Folding Rules
Spring Joint for Extension Rules
Patentee:
Charles G. Watson (exact or similar names) - Seneca Falls, NY

USPTO Classifications:
16/342, 403/146

Tool Categories:
rules : folding rules : folding rule joints

Assignees:
Westcott Rule Co., Inc. - Seneca Falls, NY

Manufacturer:
Not known to have been produced

Witnesses:
Philip R. Westcott
Mary E. Scott

Patent Dates:
Applied: Feb. 03, 1922
Granted: Oct. 21, 1924

Patent Pictures:
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