Title:
Extension rule
United States Patent 3065546
US Patent References:
/0149532.html
- - 0149532

/1015877.html
- - 1015877

/1878119.html
- - 1878119

Foldable rule
- - 2842850


Inventors:
Brocklander, Leroy H.
Publication Date:
11/27/1962
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Assignee:
Brocklander, Leroy H.
Primary Class:
33/425
International Classes:
G01B3/08; G01B3/02
Foreign References:
AT56271B