The Government has rights in this invention pursuant to grant No. ENG-17032 awarded by the National Science Foundation.
Number | Name | Date | Kind |
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3440475 | Schiller et al. | Apr 1969 | |
3515932 | King | Jun 1970 | |
3798488 | Pleshivtsev et al. | Mar 1974 | |
3928783 | Hosoki et al. | Dec 1975 | |
4218633 | Mirtich et al. | Aug 1980 |
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