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Ground retractable automobile barrier
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Patent number 5,762,443
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Issue date Jun 9, 1998
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Universal Safety Response, Inc.
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Matthew A. Gelfand
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Barrier assembly
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Patent number 4,457,105
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Issue date Jul 3, 1984
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Alex Danin
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2874493
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Patent number 2,874,493
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Issue date Feb 24, 1959
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2401804
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Patent number 2,401,804
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Issue date Jun 11, 1946
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B61 - RAILWAYS
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2251699
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Patent number 2,251,699
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Issue date Aug 5, 1941
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B61 - RAILWAYS
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2237106
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Patent number 2,237,106
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Issue date Apr 1, 1941
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B61 - RAILWAYS
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2189974
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Patent number 2,189,974
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Issue date Feb 13, 1940
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B61 - RAILWAYS
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2184207
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Patent number 2,184,207
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Issue date Dec 19, 1939
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B61 - RAILWAYS
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2168061
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Patent number 2,168,061
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Issue date Aug 1, 1939
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B61 - RAILWAYS
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2023538
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Patent number 2,023,538
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Issue date Dec 10, 1935
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B61 - RAILWAYS
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1848516
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Patent number 1,848,516
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Issue date Mar 8, 1932
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B61 - RAILWAYS
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1781675
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Patent number 1,781,675
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Issue date Nov 18, 1930
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B61 - RAILWAYS
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1669695
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Patent number 1,669,695
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Issue date May 15, 1928
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B61 - RAILWAYS
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1628720
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Patent number 1,628,720
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Issue date May 17, 1927
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B61 - RAILWAYS
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1571402
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Patent number 1,571,402
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Issue date Feb 2, 1926
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B61 - RAILWAYS
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1536214
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Patent number 1,536,214
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Issue date May 5, 1925
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B61 - RAILWAYS
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1467156
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Patent number 1,467,156
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Issue date Sep 4, 1923
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B61 - RAILWAYS
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1360992
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Patent number 1,360,992
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Issue date Nov 30, 1920
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B61 - RAILWAYS
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1326383
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Patent number 1,326,383
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Issue date Dec 30, 1919
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1207550
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Patent number 1,207,550
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Issue date Dec 5, 1916
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B61 - RAILWAYS
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1131133
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Patent number 1,131,133
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Issue date Mar 9, 1915
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B61 - RAILWAYS
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1098781
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Patent number 1,098,781
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Issue date Jun 2, 1914
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B61 - RAILWAYS
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1095221
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Patent number 1,095,221
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Issue date May 5, 1914
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B61 - RAILWAYS
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1065176
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Patent number 1,065,176
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Issue date Jun 17, 1913
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B61 - RAILWAYS
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819354
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Patent number 819,354
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Issue date May 1, 1906
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B61 - RAILWAYS
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810041
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Patent number 810,041
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Issue date Jan 16, 1906
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B61 - RAILWAYS
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770036
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Patent number 770,036
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Issue date Sep 13, 1904
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B61 - RAILWAYS
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726348
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Patent number 726,348
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Issue date Apr 28, 1903
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B61 - RAILWAYS
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498328
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Patent number 498,328
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Issue date May 30, 1893
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B61 - RAILWAYS