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US Patent: 157,134
Improvement in sash-dovetailing machines
Patentees: George Zimmer (exact or similar names) - Williamsport, PA Oscar J. Pennell (exact or similar names) - Williamsport, PA USPTO Classifications: 144/287, 144/89 Tool Categories: woodworking machines : joint making machines : dovetailing machines woodworking machines : specialty woodworking 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: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin 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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