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Double-decker rail vehicle
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Patent number 11,180,167
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Issue date Nov 23, 2021
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CRRC Qingdao Sifang Co., Ltd.
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Xiaojun Deng
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B61 - RAILWAYS
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3044419
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Patent number 3,044,419
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Issue date Jul 17, 1962
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B61 - RAILWAYS
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2884873
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Patent number 2,884,873
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Issue date May 5, 1959
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B61 - RAILWAYS
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2808787
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Patent number 2,808,787
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Issue date Oct 8, 1957
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B61 - RAILWAYS
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2743683
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Patent number 2,743,683
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Issue date May 1, 1956
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B61 - RAILWAYS
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2724347
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Patent number 2,724,347
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Issue date Nov 22, 1955
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B61 - RAILWAYS
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2681016
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Patent number 2,681,016
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Issue date Jun 15, 1954
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B61 - RAILWAYS
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2619044
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Patent number 2,619,044
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Issue date Nov 25, 1952
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B61 - RAILWAYS
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2612121
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Patent number 2,612,121
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Issue date Sep 30, 1952
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B61 - RAILWAYS
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2609760
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Patent number 2,609,760
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Issue date Sep 9, 1952
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B61 - RAILWAYS
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2599606
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Patent number 2,599,606
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Issue date Jun 10, 1952
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B61 - RAILWAYS
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2590045
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Patent number 2,590,045
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Issue date Mar 18, 1952
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B61 - RAILWAYS
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2570837
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Patent number 2,570,837
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Issue date Oct 9, 1951
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B61 - RAILWAYS
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2567894
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Patent number 2,567,894
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Issue date Sep 11, 1951
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B61 - RAILWAYS
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2564909
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Patent number 2,564,909
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Issue date Aug 21, 1951
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B61 - RAILWAYS
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2564730
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Patent number 2,564,730
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Issue date Aug 21, 1951
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B61 - RAILWAYS
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2564731
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Patent number 2,564,731
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Issue date Aug 21, 1951
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B61 - RAILWAYS
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2564732
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Patent number 2,564,732
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Issue date Aug 21, 1951
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B61 - RAILWAYS
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2561630
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Patent number 2,561,630
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Issue date Jul 24, 1951
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B61 - RAILWAYS
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2561653
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Patent number 2,561,653
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Issue date Jul 24, 1951
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B61 - RAILWAYS
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2556140
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Patent number 2,556,140
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Issue date Jun 5, 1951
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B61 - RAILWAYS
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2548006
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Patent number 2,548,006
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Issue date Apr 10, 1951
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B61 - RAILWAYS