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CA Patent: CA-5,056
Machine for clamping window sash
Patentee: William Abercrombie (exact or similar names) - Hamilton, 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, 1875 Patent Pictures: CIPO Data Report data errors or omissions to steward Carl Matthews "Vintage Machinery" entry for Wm. Abercrombie
Description: This five-year patent was extended for an additional five years; see patent CA-11,634.

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