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US Patent: 1,520,382
Boring Head
Patentee:
Raymond W. Workman (exact or similar names) - Carson City, Ormsby County, NV

USPTO Classifications:
408/198, 408/200, 408/709, 408/78

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 14, 1923
Granted: Dec. 23, 1924

Patent Pictures:
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