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US Patent: 409,097
Insulated Nippers and Cutting Instrument
Patentee:
Firmin Michael Casey - Mount Vernon, NY

USPTO Classifications:
16/431, 16/DIG.12, 30/341, 81/427.5

Tool Categories:
pliers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
William Miller
Isaac N. Pressey
C. H. Ostrander
A. Faber du Faur, Jr.

Patent Dates:
Applied: Jan. 27, 1887
Granted: Aug. 13, 1889

Patent Pictures:
Firmin Michael Casey patent August 13, 1889
USPTO pdf tiff
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Description:
Side-cutter flat jaw pliers. The metal of the handles has serrations to firmly attach glass or porcelain surface insulation.

The object is to provide electrical insulation for tools used on electric wiring, etc. Casey added a rubber coating to this idea in patent no. 419,111.

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