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Modular ladder with central mast
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Patent number 11,613,928
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Issue date Mar 28, 2023
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Curt Davidson
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Modular ladder system
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Patent number 11,091,957
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Issue date Aug 17, 2021
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SAYFA R&D PTY LTD
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Barry Voss
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Rescue ladder attachment
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Patent number 11,034,420
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Issue date Jun 15, 2021
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Ross Hoffmann
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Switchable ladder
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Patent number 10,718,160
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Issue date Jul 21, 2020
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New-Tec Integration (Xiamen) Co., Ltd.
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Luhao Leng
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Materials handling system
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Patent number 10,669,777
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Issue date Jun 2, 2020
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Bright Structures Ltd.
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Stephen Bright
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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Octagon portable tree platform
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Patent number 9,832,989
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Issue date Dec 5, 2017
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Minis R. Hillis
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Tree-mounted supports
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Patent number 9,631,428
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Issue date Apr 25, 2017
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Cal G. Niemela
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Roof climbing tool
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Patent number 9,551,184
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Issue date Jan 24, 2017
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Daniel Webster
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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-
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Tree climbing support
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Patent number 9,151,112
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Issue date Oct 6, 2015
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Cal G. Niemela
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Collapsible safe ladder
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Patent number 9,038,776
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Issue date May 26, 2015
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Lock N Climb, LLC
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Jeffrey Green
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Tree stand
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Patent number 8,991,555
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Issue date Mar 31, 2015
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Ardisam, Inc.
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Michael R. Furseth
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Rolling toe assist
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Patent number 8,857,568
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Issue date Oct 14, 2014
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Odes Foster
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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-
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Collapsible safe ladder
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Patent number 8,485,316
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Issue date Jul 16, 2013
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Lock N Climb, LLC
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Floyd LaVern Vestal
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E04 - BUILDING
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Modular ladder
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Patent number 8,381,877
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Issue date Feb 26, 2013
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Paul E. Freund
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS