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US Patent: 132,303
Improvement in tonguing and grooving knives
Patentee:
William B. McClain (exact or similar names) - Sandusky, OH

USPTO Classifications:
144/241

Tool Categories:
woodworking machines : machine and tool cutters : cutters

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Charles Cross
J. L. Moore
Patent Dates:
Granted: Oct. 15, 1872

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Description:
Knives are in three parts, and are adjustable for width and depth of tongue or groove.

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