Number | Name | Date | Kind |
---|---|---|---|
2195685 | Schneider | Apr 1940 | |
3343858 | Rice | Sep 1967 | |
3547375 | Mackey | Dec 1970 | |
3735952 | Platus et al. | May 1973 | |
3910533 | Cheatham et al. | Oct 1975 | |
4324374 | Wittmann et al. | Apr 1982 | |
4351515 | Yoshida | Sep 1982 | |
4355469 | Nevins et al. | Oct 1982 | |
4400885 | Consales | Aug 1983 | |
4511115 | Ludwigsen | Apr 1985 | |
4536114 | Belew | Aug 1985 | |
4673170 | Dykema | Jun 1987 | |
4700817 | Kondo et al. | Oct 1987 | |
4776539 | Byers et al. | Oct 1988 | |
4929009 | Vandersluis et al. | May 1990 |
Number | Date | Country |
---|---|---|
1434190 | Oct 1988 | SUX |
Entry |
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NASA Tech Briefs, Jun. 1989, Associated Business Publications Co., Inc. New York, N.Y., pp. 77-78. |