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A2004-002.2822 : Traveling towers and open storage grounds | AP/7861 | 12/31/1920 | ||
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A2004-002.2816 : Off-shore loading of lumber and ties | AP/7863 | 12/31/1920 | ||
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A2004-002.2823 : Automatic scales for bulk commodities | AP/7862 | 12/31/1920 |