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US Patent: 393,511
Tap Driving Head
Patentee:
Sanford D. Leland (exact or similar names) - Holyoke, Hampden County, MA

USPTO Classifications:
408/110, 408/140, 408/239R, 470/103

Tool Categories:
metalworking tools : tap and die holders

Assignees:
Sanford D. Leland - Holyoke, Hampden County, MA
George S. Lewis - Holyoke, Hampden County, MA
Frank E. Fay - Holyoke, Hampden County, MA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 19, 1888
Granted: Nov. 27, 1888

Patent Pictures:
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