The invention described herein was made in the performance of work under NASA Contract No. NAS 1-17441 and is subject to the provisions of Section 305 of the National Aeronautics and Space Act of 1958 (72 Stat. 435; 42 U.S.C. 2457).
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3753801 | Lockwood | Aug 1973 | |
4092659 | Ettenberg | May 1978 | |
4178564 | Ladany et al. | Dec 1979 | |
4255717 | Scifres et al. | Mar 1981 | |
4347486 | Botez | Aug 1982 | |
4369513 | Umeda et al. | Jan 1983 | |
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