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US Patent: 393,817
Mortising-machine
Portable multi-drill mortising machine
Patentee:
William H. Clapp - Auburn, NY

USPTO Classifications:
144/70, 408/112, 408/42, 408/53

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 20, 1888
Granted: Dec. 04, 1888

Patent Pictures:
USPTO pdf tiff
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Description:
Intended for mortising window-jambs.

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