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US Patent: 355,679
Supplemental Bed Plate Centering Device and Work Holder for Drilling or Slotting Machines
Patentee:
Adolph F. Brewer (exact or similar names) - San Francisco, San Francisco County, CA

USPTO Classifications:
269/60, 408/91

Tool Categories:
metalworking machines : drilling and boring : drill presses : drill press accessories
metalworking machines : metal slotting machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Oct. 01, 0186
Granted: Jan. 11, 1887

Patent Pictures:
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Google Patents
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