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US Patent: 2,188,996
Indexing mechanism
Patentee: Leonard O. Carlsen (exact or similar names) - Rochester, NY USPTO Classifications: 74/820, 74/822 Tool Categories: metalworking machines : gear making machines Assignees: Gleason Works - Rochester, NY Manufacturer: Gleason Works - Rochester, NY Witnesses: none listed	Patent Dates: Applied: Aug. 23, 1938 Granted: Feb. 06, 1940 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens Gleason company history "Vintage Machinery" entry for the Gleason Works Gleason Corporation

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