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US Patent: 385,543
Tap with Detachable Cutters
Patentee:
Albert Burritt - Waterbury, New Haven County, CT

USPTO Classifications:
408/202, 408/215

Tool Categories:
metalworking tools : taps and dies

Assignees:
None

Manufacturer:
Pratt & Whitney Co. - Hartford, Hartford County, CT

Witnesses:
Charles F. Schumacher
Adrian Rais
J. H. Shumway
Fred C. Earles

Patent Dates:
Applied: Apr. 16, 1888
Granted: Jul. 03, 1888

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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"Vintage Machinery" entry for Pratt, Whitney & Co.

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