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US Patent: 1,463,686
Boring Head
Patentees:
John H. Frey (exact or similar names) - Erie, Erie County, PA
John N. Kaiser (exact or similar names) - Erie, Erie County, PA

USPTO Classifications:
279/6

Tool Categories:
metalworking machines : drilling and boring : boring heads

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Aug. 29, 1921
Granted: Jul. 31, 1923

Patent Pictures:
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