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Energy-efficient assistive stairs
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Patent number 11,608,641
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Issue date Mar 21, 2023
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Georgia Tech Research Corporation
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Cheng-Yun Karen Liu
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B66 - HOISTING LIFTING HAULING
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Energy-efficient assistive stairs
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Patent number 10,975,574
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Issue date Apr 13, 2021
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Georgia Tech Research Corporation
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Cheng-Yun Karen Liu
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B66 - HOISTING LIFTING HAULING
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Operable ramp
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Patent number 8,813,290
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Issue date Aug 26, 2014
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Lift-U, division of Hogan Mfg., Inc.
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Donald Morris
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B66 - HOISTING LIFTING HAULING
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Lift apparatus
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Patent number 8,807,283
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Issue date Aug 19, 2014
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Dennis Shell
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Portable wheel chair lift
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Patent number 8,739,935
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Issue date Jun 3, 2014
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AGM Container Controls, Inc.
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Eric Zuercher
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B60 - VEHICLES IN GENERAL
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Operable step
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Patent number 8,739,342
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Issue date Jun 3, 2014
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Life-U, Division of Hogan Mfg., Inc.
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David Johnson
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B66 - HOISTING LIFTING HAULING
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Operable step
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Patent number 8,631,529
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Issue date Jan 21, 2014
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Lift-U, division of Hogan Mfg., Inc.
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David Johnson
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B66 - HOISTING LIFTING HAULING
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Portable wheel chair lift
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Patent number 7,926,618
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Issue date Apr 19, 2011
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AGM Container Controls, Inc.
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Eric Zuercher
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B60 - VEHICLES IN GENERAL
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Convertible lift assembly
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Patent number 7,234,565
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Issue date Jun 26, 2007
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Thomson & Leonard
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Hong Lam
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B66 - HOISTING LIFTING HAULING
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Stair lift system
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Patent number 7,131,522
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Issue date Nov 7, 2006
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Oscar Sircovich
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B66 - HOISTING LIFTING HAULING
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Stairway lift
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Patent number 7,096,998
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Issue date Aug 29, 2006
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Todd M. Edmunds
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B66 - HOISTING LIFTING HAULING
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Telescoping ramp
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Patent number 7,010,825
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Issue date Mar 14, 2006
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Goldfinch Enterprises, Inc.
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Barbara Kaye Finch Salas
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B66 - HOISTING LIFTING HAULING
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Convertible lift mechanism
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Patent number 5,937,971
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Issue date Aug 17, 1999
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Vertical Mobility LLC
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George Lawrence Storm
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B66 - HOISTING LIFTING HAULING
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Collapsing stair lift
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Patent number 5,234,078
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Issue date Aug 10, 1993
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Roth; Daniel K.
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Virgil A. Smith
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B66 - HOISTING LIFTING HAULING
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Wheelchair lift
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Patent number 4,457,402
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Issue date Jul 3, 1984
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Lipstep Design Group Corp.
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Joseph A. Del Vecchio
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE