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Automatic vacuum bowling lane stripper
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Patent number 4,962,565
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Issue date Oct 16, 1990
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Century International Corporation
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Donald E. Ingermann
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Automatic vacuum bowling lane stripper
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Patent number 4,920,604
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Issue date May 1, 1990
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Century International Corporation
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Donald E. Ingermann
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Bowling lane vacuum with floating head
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Patent number 4,856,138
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Issue date Aug 15, 1989
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Century International Corporation
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Donald E. Ingermann
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Bowling lane duster
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Patent number D281362
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Issue date Nov 12, 1985
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Century International Corp.
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Donald E. Ingermann
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D32 - Washing, cleaning, or drying machine
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Combination bowling lane stripper and duster
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Patent number 4,510,642
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Issue date Apr 16, 1985
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Century International Corp.
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Donald E. Ingermann
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Automatic bowling lane stripper
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Patent number 4,246,674
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Issue date Jan 27, 1981
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Century International Corp.
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Donald E. Ingermann
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...