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US Patent: 1,837,943
Convertible Boring Brace
Multipurpose brace (long throw, short throw, angle brace.)
Patentee:
Dan L. Blake - Wenatchee, WA

USPTO Classifications:
81/37

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 03, 1930
Granted: Dec. 22, 1931

Patent Pictures:
All the patent images are condensed here.
USPTO pdf tiff
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Description:
This is a rehash of the Haeberli & Schmidt patent 859,059 but adds an adjustable throw to the mix.

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