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SPIRAL FORMING
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Publication date Mar 14, 2024
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Keystone Tower Systems, Inc.
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Eric D. Smith
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TAPERED STRUCTURE CONSTRUCTION
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Publication number 20230249236
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Publication date Aug 10, 2023
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Keystone Tower Systems, Inc.
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Eric D. Smith
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SPIRAL FORMING
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Publication number 20220080484
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Publication date Mar 17, 2022
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Keystone Tower Systems, Inc.
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Eric D. Smith
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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TUBULAR STRUCTURE REINFORCING
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Publication number 20210231237
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Publication date Jul 29, 2021
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Keystone Tower Systems, Inc.
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Eric D. Smith
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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TAPERED STRUCTURE CONSTRUCTION
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Publication number 20210213501
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Publication date Jul 15, 2021
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Keystone Tower Systems, Inc.
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Eric D. Smith
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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FLANGE FITTING FOR TUBULAR STRUCTURES
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Publication number 20200018431
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Publication date Jan 16, 2020
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Keystone Tower Systems, Inc.
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Rosalind K. Takata
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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SPIRAL FORMING
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Publication number 20190160505
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Publication date May 30, 2019
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Keystone Tower Systems, Inc.
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Eric D. Smith
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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TAPERED STRUCTURE CONSTRUCTION
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Publication number 20180133769
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Publication date May 17, 2018
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Keystone Tower Systems, Inc.
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Eric D. Smith
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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SHEET TRANSITIONING IN SPIRAL FORMED STRUCTURES
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Publication number 20180056354
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Publication date Mar 1, 2018
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Keystone Tower Systems, Inc.
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Rosalind K. Takata
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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SPIRAL FORMING
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Publication number 20160375476
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Publication date Dec 29, 2016
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Keystone Tower Systems, Inc.
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Eric D. Smith
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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TAPERED STRUCTURE CONSTRUCTION
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Publication number 20160107213
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Publication date Apr 21, 2016
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Keystone Tower Systems, Inc.
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Eric D. Smith
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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TAPERED STRUCTURE CONSTRUCTION
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Publication number 20130074564
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Publication date Mar 28, 2013
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Eric Smith
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...