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US Patent: 391,533
Centering Apparatus
Patentee:
John Eliot Howard (exact or similar names) - Altoona, Blair County, PA

USPTO Classifications:
144/253.7, 279/33, 33/673, 82/164

Tool Categories:
metalworking machines : metal lathes : metal lathe accessories and attachments

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 02, 1888
Granted: Oct. 23, 1888

Patent Pictures:
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