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US Patent: 690,019
Telescope
Patentee: Henry Lawrence De Zeng, Jr. (exact or similar names) - Buffalo, NY USPTO Classifications: 359/513 Tool Categories: armaments : firearms specialty tools : telescopes Assignees: Cataract Tool & Optical Co. - Buffalo, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 28, 1900 Granted: Dec. 31, 1901 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Cataract Tool & Optical Co.

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