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US5039275A
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Method for transferring cargo between vessel and dock
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US4872798A
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Vessel to dock cargo transfer apparatus
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US4668899A
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Overhead garage door lock for use with automatic opener
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US4144962A
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Adjustable attitude loading trimmer
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US4168009A
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Automatic discharge cargo lifting apparatus
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US4054182A
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Ladder carriage
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US4046266A
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Retractable cargo transfer apparatus
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US4036376A
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Cargo transport system
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US3993200A
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Cargo transport system
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US4008916A
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Load unitizer
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US3941258A
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Method and apparatus for storing and unloading bulk material
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