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US Patent: 658,994
Focusing Device for Cameras
Patentee: John A. Mosher (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 396/144 Tool Categories: photographic apparatus : cameras : focusing attachments Assignees: Adams & Westlake Co. - Chicago, Cook County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 31, 1899 Granted: Oct. 02, 1900 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Adams & Westlake Co.

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