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US Patent: 1,216,105
Plumb, Level, and Square
Patentees:
Joseph E. Gagnon - Philadelphia, PA
John A. Hawthorne, Jr. - Chester, PA

USPTO Classifications:
33/342, 33/473

Tool Categories:
layout tools : levels
layout tools : bevels
layout tools : squares

Assignees:
Joseph E. Gagnon - Philadelphia, PA
John A. Hawthorne, Jr. - Chester, PA
Alfred S. Orchard - Philadelphia, PA

Manufacturer:
Unknown

Witnesses:
John A. Wiedersheim
N. Bussinger

Patent Dates:
Applied: Jul. 22, 1916
Granted: Feb. 13, 1917

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
Known examples are marked: MODEL/PAT U.S./ FEB 13,17

MODEL is assumed to be the name of the manufacturer or a brand name, currently unknown.

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