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US Patent: D10,014
Design for Spirit Levels
Patentee:
Leonard L. Davis (exact or similar names) - Springfield, MA

USPTO Classifications:
D10/69

Tool Categories:
layout tools : levels : metallic levels

Assignees:
None

Manufacturer:
Davis Level & Tool Co. - Springfield, MA

Witnesses:
William B. Stone
J. P. Buckland

Patent Dates:
Applied: May 15, 1877
Granted: May 29, 1877

Patent Pictures: [ 1 | 2 ]
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Description:
Classic Davis metal level. The vertical and horizontal rung style ornamentation is the design patented. Three other patents D10015, D10016, and D10017, were also submitted on the same date by Davis. It is interesting to note that instead of a drawing provided for the patent application, a photograph was submitted instead. Additionally, there are only 14 days between the application and the grant date. Length of the patent is for 7 years.

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