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  • Siggel, E.; Meyer, G.; Grotjahn, H.; Maegeriein, H.; Jacobs, E.; Wallrabenstein, M.
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    Flame-Resistant Polymeric Products From Polyacyloxalamidrazones and Viscose and Their Manufacture.
    Akzona Inc., Asheville, NC
    U.S. Patent 3,839,244
    U.S. Patent 3,839,244
    October 1, 1974
    8 p.