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CA Patent: CA-11,634
Machines for clamping window sashes
Patentee: William Abercrombie (exact or similar names) - Ancaster, ON Canada USPTO Classifications: Tool Categories: work holding : clamps : miter and corner clamps woodworking machines : specialty woodworking machines : window making machines Assignees: None Manufacturer: Wm. Abercrombie - Hamilton, ON Canada Witnesses: Unknown	Patent Dates: Granted: Aug. 13, 1880 Patent Pictures: CIPO Data Espacenet patent Report data errors or omissions to steward Carl Matthews "Vintage Machinery" entry for Wm. Abercrombie
Description: This is a five-year extension of patent CA-5,056. The petition describes Abercrombie as a manufacturer.

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