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2682187
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Patent number 2,682,187
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Issue date Jun 29, 1954
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G04 - HOROLOGY
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2670642
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Patent number 2,670,642
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Issue date Mar 2, 1954
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G04 - HOROLOGY
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2287043
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Patent number 2,287,043
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Issue date Jun 23, 1942
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G04 - HOROLOGY
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G04 - HOROLOGY
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125861
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Patent number 125,861
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Issue date Apr 16, 1872
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G04 - HOROLOGY