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CA Patent: CA-275,075
Collapsible core
Patentee: Barthold de Mattia (exact or similar names) - Toronto, ON Canada USPTO Classifications: Tool Categories: Assignees: Bawden Machine Co., Ltd. - Toronto, ON Canada Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Nov. 01, 1927 Patent Pictures: CIPO Data Report data errors or omissions to steward Jeff Joslin "Vintage Machinery" entry for Bawden Machine Co., Ltd.
Description: The invention relates to a machine for manufacturing pneumatic tires.

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