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U.S. patent 2,292,387 granted on August 11, 1942, under her legal name Hedy Kiesler Markey. H04L9/38 - Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers Subject-matter directed to cryptographic mechanisms involving encryption effected by mechanical apparatus, as rotating cams, switches or key-tape punchers. https://patents.google.com/patent/US2292387

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U.S. patent 2,292,387 granted on August 11, 1942, under her legal name Hedy Kiesler Markey. H04L9/38 - Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers Subject-matter directed to cryptographic mechanisms involving encryption effected by mechanical apparatus, as rotating cams, switches or key-tape punchers. https://patents.google.com/patent/US2292387
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Project Gutenberg (gutenberg_org@mastodon.social)'s status on Sunday, 19-Jan-2025 21:44:16 JST Project Gutenberg

Austrian-born American actress and inventor Hedy Lamarr died #OTD in 2000.
Lamarr wanted to aid the Allied forces during World War II. She shared her concept for using “frequency hopping” with the U.S. Navy and codeveloped a patent with Antheil 1941. Today, her innovation helped make possible a wide range of wireless communications technologies, including Wi-Fi, GPS, and Bluetooth.
Below, U.S. patent 2,292,387 granted on August 11, 1942, under her legal name Hedy Kiesler Markey.
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