Number | Name | Date | Kind |
---|---|---|---|
2329789 | Schank et al. | Sep 1943 | |
2940736 | Odman | Jun 1960 | |
4553458 | Schoonover | Nov 1985 | |
4744410 | Groves | May 1988 | |
5491997 | Ogawa | Feb 1996 |
Number | Date | Country |
---|---|---|
0 522 360 A2 | Jun 1992 | EPX |
702137 | Jan 1954 | GBX |
899773 | Jun 1962 | GBX |
WO 9641691 | Dec 1996 | WOX |
Entry |
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International Search Report for International Patent No. PCT/US 98/07023 completed Jul. 24, 1998. |