Number | Name | Date | Kind |
---|---|---|---|
3498375 | McEwen et al. | Mar 1970 | A |
3902554 | Hooper | Sep 1975 | A |
4007782 | Nybo et al. | Feb 1977 | A |
4108318 | Rode et al. | Aug 1978 | A |
4147221 | Ilfrey et al. | Apr 1979 | A |
4230190 | Guinn et al. | Oct 1980 | A |
4286665 | Walker | Sep 1981 | A |
4437521 | Richardson et al. | Mar 1984 | A |
4438817 | Pokladnik et al. | Mar 1984 | A |
4518042 | Miller | May 1985 | A |
4580628 | Schaeper | Apr 1986 | A |
4630680 | Elkins | Dec 1986 | A |
4702320 | Gano et al. | Oct 1987 | A |
4732215 | Hopper | Mar 1988 | A |
5025865 | Caldwell et al. | Jun 1991 | A |
5775417 | Council | Jul 1998 | A |
5775845 | Wybro | Jul 1998 | A |
Number | Date | Country |
---|---|---|
1 103 459 | May 2001 | EP |
1 590 387 | Jun 1981 | GB |
WO 0034618 | Jun 2000 | WO |
Entry |
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PCT International Search Report from International Application No. PCT/GB01/04356, Dated Apr. 12, 2002. |