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Signal Advance Inc. (OTC:SIGL) Secures Second Major Patent, Strengthening Analog Guard(R) AI and Quantum-Resistant Encryption Platform

Summary by The Huntsville Item
ROSHARON, TX / ACCESS Newswire / April 21, 2026 / Signal Advance, Inc. (OTCID:SIGL), a cybersecurity innovator focused on next-generation, physics-based encryption, today announced the issuance of its second major U.S. patent, further strengthening its Analog Guard® platform and expanding…

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The Huntsville ItemThe Huntsville Item
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Signal Advance Inc. (OTC:SIGL) Secures Second Major Patent, Strengthening Analog Guard(R) AI and Quantum-Resistant Encryption Platform

ROSHARON, TX / ACCESS Newswire / April 21, 2026 / Signal Advance, Inc. (OTCID:SIGL), a cybersecurity innovator focused on next-generation, physics-based encryption, today announced the issuance of its second major U.S. patent, further strengthening its Analog Guard® platform and expanding…

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The Huntsville Item broke the news on Friday, April 24, 2026.
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