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US Patent: 572,445
Sectional expansion-tap
Patentee:
Benjamin W. Prentice (exact or similar names) - Worcester, Worcester County, MA

USPTO Classifications:
408/167

Tool Categories:
industrial tools : taps and dies
metalworking tools : taps and dies

Assignees:
Albert F. Prentice - Worcester, Worcester County, MA
Vernon F. Prentice - Worcester, Worcester County, MA

Manufacturer:
Prentice Brothers Co. - Worcester, Worcester County, MA

Witnesses:
Simeon E. King
Charles H. Burleigh

Patent Dates:
Applied: Mar. 10, 1896
Granted: Dec. 01, 1896

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Prentice Bros.

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