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US Patent: 100,463
Improvement in Spirit Level
Patentees:
Edwin A. Stratton - Greenfield, MA
Charles M. Stratton - Greenfield, MA

USPTO Classifications:
217/69, 33/350, 33/379

Tool Categories:
layout tools : levels : wooden levels

Assignees:
None

Manufacturer:
Stratton Brothers - Greenfield, MA

Witnesses:
Wendell T. Davis
Austin De Wolf

Patent Dates:
Granted: Mar. 01, 1870

Patent Pictures:
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Description:
Brass binding for levels created by using two flanges at right angles to each other and creating a groove in the stock and held in place by the end cap. This patent was later improved by the Strattons in patent number 370,826 which added a pin through the end cap to secure the binding.

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