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US Patent: 157,134
Improvement in sash-dovetailing machines
Patentees:
George Zimmer - Williamsport, PA
Oscar J. Pennell - Williamsport, PA

USPTO Classifications:
144/287, 144/89

Tool Categories:
woodworking machines : joint making machines : dovetailing machines
woodworking machines : specialty machines : window making machines

Assignees:
None

Manufacturer:
Rowley & Hermance Co. - Williamsport, PA

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 04, 1874
Granted: Nov. 24, 1874

Patent Pictures:
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"Vintage Machinery" entry for Rowley & Hermance Co.
Description:
This patent date was seen in an 1897 Rowley & Hermance catalog on a "Improved Sash Dovetailing Machine".

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