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Modular staircase
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Patent number 11,814,193
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Issue date Nov 14, 2023
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Federal Express Corporation
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Jacob W. Springer
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E04 - BUILDING
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Portable staircase
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Patent number 11,591,854
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Issue date Feb 28, 2023
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MA Staircase LLC, Paracorp Incorporated
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Torsten Leines
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Self-rescue system for large machines
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Patent number 10,731,414
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Issue date Aug 4, 2020
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Komatsu Mining Germany GmbH
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Jens Junghans
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Portable ladder system
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Patent number 10,549,697
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Issue date Feb 4, 2020
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Robert G. Rolson
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B60 - VEHICLES IN GENERAL
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Modular staircase
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Patent number 10,532,827
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Issue date Jan 14, 2020
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Federal Express Corporation
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Jacob W. Springer
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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-
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Access device
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Patent number 9,447,638
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Issue date Sep 20, 2016
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Justoy Pty Ltd
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Robert Ian Hedley
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B60 - VEHICLES IN GENERAL
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Vehicle access system
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Patent number 9,238,941
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Issue date Jan 19, 2016
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Barjoh Pty Ltd
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Nathan John Ellement
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B60 - VEHICLES IN GENERAL
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-
-
-
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Retractable ladder assembly
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Patent number 6,789,648
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Issue date Sep 14, 2004
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Cook Manufacturing Corporation
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Gregory D. Cook
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Folding rail for a lifting truck
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Patent number 5,634,529
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Issue date Jun 3, 1997
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Strato-Lift, Inc.
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Anh M. Nguyen
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Ladder hinge and stabilizer therefor
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Patent number 4,153,138
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Issue date May 8, 1979
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Allis-Chalmers Corporation
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Maynard E. Walberg
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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3869022
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Patent number 3,869,022
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Issue date Mar 4, 1975
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3596976
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Patent number 3,596,976
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Issue date Aug 3, 1971
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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3396814
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Patent number 3,396,814
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Issue date Aug 13, 1968
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B66 - HOISTING LIFTING HAULING
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3385398
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Patent number 3,385,398
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Issue date May 28, 1968
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B66 - HOISTING LIFTING HAULING
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2981362
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Patent number 2,981,362
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Issue date Apr 25, 1961
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2841960
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Patent number 2,841,960
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Issue date Jul 8, 1958
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2615609
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Patent number 2,615,609
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Issue date Oct 28, 1952
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2606078
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Patent number 2,606,078
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Issue date Aug 5, 1952
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2512150
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Patent number 2,512,150
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Issue date Jun 20, 1950
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2362170
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Patent number 2,362,170
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Issue date Nov 7, 1944
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS