Number | Name | Date | Kind |
---|---|---|---|
1521348 | Ambruster | Dec 1924 | |
3744222 | Delao | Jul 1973 | |
3811371 | Hardy | May 1974 | |
4113454 | Cvacho | Sep 1978 | |
4237780 | Truhan | Dec 1980 | |
4321064 | Vargo | Mar 1982 | |
4484513 | Napadow | Nov 1984 | |
4684378 | Bratten | Aug 1987 |
Number | Date | Country |
---|---|---|
205075 | Dec 1983 | DDX |
699760 | Nov 1953 | GBX |
Entry |
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Int Patent Application WO88/04952 dated 7/14/88, 1 sheet drawing, 6 sheets specification. |