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Modular ramp system
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Patent number 10,525,327
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Issue date Jan 7, 2020
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Wang-Chuan Chen
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Wave-shaped ramp
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Patent number 10,202,725
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Issue date Feb 12, 2019
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T.K. CHIN COMPANY LTD.
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Howard Chin
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Digital video ramp
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Patent number 9,943,745
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Issue date Apr 17, 2018
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Steve Welck
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Modular ramp system
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Patent number 9,441,333
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Issue date Sep 13, 2016
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Philip McIntosh
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Modular ramp system
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Patent number 8,635,728
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Issue date Jan 28, 2014
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Michael Mapp
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Modular ramp system
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Patent number 8,196,244
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Issue date Jun 12, 2012
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Michael Mapp
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Floors
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Patent number 4,577,448
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Issue date Mar 25, 1986
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The British Picker Company, Ltd.
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David Howorth
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Skateboard arena
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Patent number 4,258,911
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Issue date Mar 31, 1981
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Alexander J. Alexander
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Roller skating rink
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Patent number 4,172,593
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Issue date Oct 30, 1979
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Ronald J. Palakanis
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Adjustable skateboard ramp
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Patent number 4,129,916
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Issue date Dec 19, 1978
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Todd R. Schlesinger
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Skateboard rink and method
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Patent number 4,121,821
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Issue date Oct 24, 1978
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Alton J. Graham
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Skating rink assembled from a kit
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Patent number 3,930,647
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Issue date Jan 6, 1976
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The Raymond Lee Organization, Inc.
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Ray Berlemont
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3266800
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Patent number 3,266,800
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Issue date Aug 16, 1966
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES