US Patent: 169,927 - Improvement in plumb-levels


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US Patent: 169,927

Improvement in plumb-levels

Patentee:

Henry S. Tarr (exact or similar names) - Philadelphia, PA

USPTO Classifications:

33/368

Tool Categories:

layout tools : levels : inclinometers

Assignees:

None

Manufacturer:

H. S. Tarr & Son - Philadelphia, PA

Witnesses:

John J. Miller

J. Plankinton

Patent Dates:
Applied:	Sep. 23, 1875
Granted:	Nov. 16, 1875

Patent Pictures:

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Description:

Although this patent does not explicitly say so, it seems to be an improvement on patent 40,428 which was granted to D. D. Polleys and W. H. Polleys. An example has been seen marked with both patent dates. See the earlier patent for more information.