US Patent: D44,305 - Design for an Attachment for Rules


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US Patent: D44,305

Design for an Attachment for Rules

Patentee:

George F. Hall (exact or similar names) - Newark, NJ

USPTO Classifications:

D10/71, D10/74

Tool Categories:

rules

Assignees:

None

Manufacturer:

Unknown

Witnesses:

Fredk. C. Fraentzel

Fredk H. W. Fraentzel

Patent Dates:
Applied:	Feb. 01, 1913
Granted:	Jul. 08, 1913

Patent Pictures:

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Description:

Attachment for folding rules for 90 and 45 degree angle marking. Manufactured item utilized a brass cam lever instead of a set screw with the body made of aluminum.

Patent date marked on the brass cam lever.

Patent term is 3 1/2 years.