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Sea marker
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Patent number 5,144,906
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Issue date Sep 8, 1992
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Piepenbrock Pyrotechnik GmbH
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Daniel Kraemer
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C06 - EXPLOSIVES MATCHES
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3902843
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Patent number 3,902,843
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Issue date Sep 2, 1975
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3882811
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Patent number 3,882,811
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Issue date May 13, 1975
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F42 - AMMUNITION BLASTING
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3372410
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Patent number 3,372,410
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Issue date Mar 12, 1968
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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2639106
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Patent number 2,639,106
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Issue date May 19, 1953
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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2376290
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Patent number 2,376,290
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Issue date May 15, 1945
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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2291037
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Patent number 2,291,037
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Issue date Jul 28, 1942
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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2288997
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Patent number 2,288,997
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Issue date Jul 7, 1942
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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2091857
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Patent number 2,091,857
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Issue date Aug 31, 1937
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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1337383
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Patent number 1,337,383
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Issue date Apr 20, 1920
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT