Patent Case File No. 497, Improvement in the Machine for Preparing Ice for Shipping and Storing, Inventor Nathaniel J. Wyeth - NARA - 117724508 (page 5).jpg
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Patent Case File No. 497, Improvement in the Machine for Preparing Ice for Shipping and Storing, Inventor Nathaniel J. Wyeth NARA 117724508 (page 5), United States Patent and Trademark Office documents, US National Archives series: Patent Case Files, Images from the National Archives and Records Administration, US National Archives location: other, Patent Case File No. 497, Improvement in the Machine for Preparing Ice for Shipping and Storing, Inventor Nathaniel J. Wyeth
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特許出願ファイル第497号、海運および貯蔵のための氷の準備機械の改善、発明者ナサニエルJ.ワイスNARA117724508(page 5)、米国特許商標庁文書、米国国立公文書館シリーズ:特許事件簿、米国国立公文書記録管理局の画像、米国国立公文書館の位置。もう1つ、特許事件ファイル番号497、海運および盗難のための氷の準備機械の改善、発明者ナサニエルJ.ワイスJ.ワイス
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ice machine shipping office wyeth