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US Patent: 292,316
Mandrel attachment for circular saws
Adapter for wobble dadoing
Patentee:
Edward W. Johnson (exact or similar names) - Waterbury, CT

USPTO Classifications:
144/238

Tool Categories:
woodworking machines : circular saws : circular saw accessories

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Orson Hayward
Willis Johnson

Patent Dates:
Applied: Aug. 27, 1883
Granted: Jan. 22, 1884

Patent Pictures:
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