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US Patent: 2,643,554
Boring Bar Pilot Support
Patentee:
Ernest Sperisen (exact or similar names) - Madison, Dane County, WI

USPTO Classifications:
408/241R, 82/152

Tool Categories:
metalworking machines : metalworking machine tool holders

Assignees:
Gisholt Machine Co. - Madison, Dane County, WI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jan. 14, 1948
Granted: Jun. 30, 1953

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Gisholt Machine Co.

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