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US Patent: 1,159,012
Structure Made of Relatively Movable Interlocking Sections
Patentee:
Herman Gasstrom (exact or similar names) - New York, NY

USPTO Classifications:
33/809

Tool Categories:
rules : folding rules : folding rule joints

Assignees:
Dahl Mfg. Co. - New York, NY

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Feb. 11, 1913
Granted: Nov. 02, 1915

Patent Pictures:
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