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US Patent: 420,982
Tubular cutter-lathe Spiral lathe
Patentees: Emil Zimmermann (exact or similar names) - New York, NY August Schmid (exact or similar names) - New York, NY Gerhard Wunderle (exact or similar names) - New York, NY USPTO Classifications: 142/23, 82/136 Tool Categories: woodworking machines : specialty woodworking machines : rope and spiral cutting machines Assignees: F. E. Zimmermann & Co. - New York, NY Manufacturer: F. E. Zimmermann & Co. - New York, NY Witnesses: Paul Goepel Carl Karp	Patent Dates: Applied: Apr. 24, 1889 Granted: Feb. 11, 1890 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for F. E. Zimmermann & Co.

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