File:Patent Case File No. 2,642,679, Ice Rink Resurfacing Machine, Inventor Frank J. Zamboni - NARA - 117724382 (page 87).jpg
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current | 03:15, 19 July 2019 | ![]() | 2,988 × 2,434 (405 KB) | commons>US National Archives bot | Bot-assisted upload of US National Archives Identifer 117724382. |
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