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US Patent: 1,573,551
Peep Hole for Threads
Patentee: David C. Klausmeyer (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 116/208, 187/267, 187/414, 254/98, 269/285, 408/234, 411/428, 74/89.44 Tool Categories: metalworking machines : drilling and boring : drill presses : radial drill presses Assignees: Cincinnati Bickford Tool Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 08, 1921 Granted: Feb. 16, 1926 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cincinnati Bickford Tool Co.

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