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CA Patent: CA-14,634
Improvements in Expanding Mandrels Perfectionnements des Mandrins a Expansion
Patentee: William H. Nicholson (exact or similar names) - Wilkes-Barre, Luzerne County, PA USPTO Classifications: Tool Categories: metalworking tools : mandrels and arbors Assignees: None Manufacturer: W. H. Nicholson & Co. - Wilkes-Barre, Luzerne County, PA Witnesses: Unknown	Patent Dates: Applied: Apr. 10, 1882 Granted: Apr. 21, 1882 Patent Pictures: CIPO Data Espacenet patent Report data errors or omissions to steward Joel Havens Vintage Machinery entry for W. H. Nicholson & Co.
Description: Patented in the United States, patent #255,010.

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