Image: Patent Case File No. 2,642,679, Ice Rink Resurfacing Machine, Inventor Frank J. Zamboni - NARA - 117724382 (page 87)
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Title: Patent Case File No. 2,642,679, Ice Rink Resurfacing Machine, Inventor Frank J. Zamboni
Credit: U.S. National Archives and Records Administration
Author: Unknown authorUnknown author or not provided
Usage Terms: Public domain
License: Public domain
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