US Patent: 298,043


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US Patent: 298,043

Wrench

Patentee:

Nathaniel W. Vandegrift (exact or similar names) - Bridgeport, CT

USPTO Classifications:

81/126, 81/166, 81/175, 81/99

Tool Categories:

wrenches : pipe wrenches

Assignees:

Frank Armstrong - Bridgeport, CT

Manufacturer:

Armstrong Manufacturing Co. - Bridgeport, CT

Witnesses:

J. Charles Gormley

Alfred B. Beers

Patent Dates:
Applied:	Nov. 05, 1883
Granted:	May 06, 1884

Patent Pictures: [ 1 | 2 ]

Nathaniel V. Vandegrift Pat. May 6, 1884

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Description:

This patent was used by the Armstrong Mfg. Co. of Bridgeport, CT for their screw-adjust pipe wrench. The wrench also draws upon Armstrong & Vandegrift's patent No. 392,300 granted November 6, 1888.