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Magnetic sweeper
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Patent number 6,142,310
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Issue date Nov 7, 2000
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Gerald Allen Haase
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Magnetic sweeper construction
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Patent number 5,285,904
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Issue date Feb 15, 1994
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Gerald A. Haase
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Metal catching cover
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Patent number 4,904,376
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Issue date Feb 27, 1990
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Gerald A. Haase
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Vacuum cleaner attachment
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Patent number 4,715,088
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Issue date Dec 29, 1987
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Gerald A. Haase
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Magnetic sweeper
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Patent number 4,407,038
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Issue date Oct 4, 1983
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Gerald A. Haase
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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