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Tubular structure reinforcing
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Patent number 12,297,951
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Issue date May 13, 2025
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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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Patent number 12,226,813
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Issue date Feb 18, 2025
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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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Slab casting method
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Patent number 12,097,554
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Issue date Sep 24, 2024
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Nippon Steel Corporation
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Daisuke Nikkuni
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B22 - CASTING POWDER METALLURGY
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Roll line
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Patent number 11,883,867
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Issue date Jan 30, 2024
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Norbert Umlauf
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Bending method
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Patent number 11,707,774
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Issue date Jul 25, 2023
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Mitsubishi Heavy Industries, Ltd.
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Takahiro Tachibana
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Tapered structure construction
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Patent number 11,571,727
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Issue date Feb 7, 2023
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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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Refractory metal plates
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Patent number 11,443,929
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Issue date Sep 13, 2022
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Materion Newton, Inc.
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Peter R. Jepson
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B22 - CASTING POWDER METALLURGY
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Mandrel with compensating grip
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Patent number 11,413,671
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Issue date Aug 16, 2022
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Anthony Alessandrini
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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