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US Patent: 185
Double-Centered Joint for Rules
Patentee:
Lemuel Hedge - Hartford, CT

USPTO Classifications:
16/371, 403/113, 5/52

Tool Categories:
rules : folding rules : folding rule joints

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Clarence Hedge
Normana Burr

Patent Dates:
Granted: Apr. 29, 1837

Patent Pictures: [ 1 | 2 ]
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Description:
This is a very unusual rule joint, which uses two centers instead of the usual one. It is a very decorative joint, but provides little concrete benefit.

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