US Patent 928,117 drawing.jpg
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US Patent 928,117 drawing, Mail hooks, Patents from the United States
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US Patent 928,117 drawing, Patent number: 928117 drawing, 1909 U.S. Patent 928,117 catcher pouch crane
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米国特許第928,117号、郵便針、米国特許
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米国特許第928,117号、画数:928117画、1909 米国特許第928,117号 釣鶴
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