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US Patent: 3,089,358
Adjustable Boring Head
Patentee:
Marion D. Spurgeon (exact or similar names) - Excelsior, Hennepin County, MN

USPTO Classifications:
408/197

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 17, 1959
Granted: May 14, 1963

Patent Pictures:
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