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2512769 | Crumrine | Jun 1950 | A |
2651705 | Clemens | Sep 1953 | A |
3128161 | Hudon | Apr 1964 | A |
3305938 | Goldstein | Feb 1967 | A |
3612824 | Berryman | Oct 1971 | A |
3643346 | Lester | Feb 1972 | A |
3674980 | Cox | Jul 1972 | A |
3766397 | Rockson | Oct 1973 | A |
3902508 | Sliman, Sr. | Sep 1975 | A |
4087924 | Fujimoro et al. | May 1978 | A |
4197448 | Harigai | Apr 1980 | A |
4226251 | Wall | Oct 1980 | A |
4263500 | Springer et al. | Apr 1981 | A |
4323761 | Hubner | Apr 1982 | A |
4327278 | Tomaro | Apr 1982 | A |
4349725 | Sheridan | Sep 1982 | A |
4419835 | Strain | Dec 1983 | A |
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4464906 | Outlaw | Aug 1984 | A |
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4596921 | Hersh et al. | Jun 1986 | A |
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4991314 | Allen | Feb 1991 | A |
5054211 | Shulman | Oct 1991 | A |
5163234 | Tsukamoto et al. | Nov 1992 | A |
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Number | Date | Country |
---|---|---|
292572 | Jun 1916 | DE |
1 076 222 | Feb 1960 | DE |
0 170 974 | Feb 1986 | EP |
0 400 381 | Dec 1990 | EP |
2 270 838 | Mar 1994 | GB |
4-367609 | Dec 1992 | JP |
5-91755 | Apr 1993 | JP |
5-130915 | May 1993 | JP |
2000-175839 | Jun 2000 | JP |
WO 8302753 | Aug 1983 | WO |