Number | Name | Date | Kind |
---|---|---|---|
1292512 | Park | Jan 1919 | |
3341003 | Marsh | Sep 1967 | |
3460727 | Baughman | Aug 1969 | |
5328065 | Kolton | Jul 1994 | |
5433355 | Watkins | Jul 1995 |
Entry |
---|
WO 94/02836, IPO Document, Aug. 1984, Feldinger. |
EPO 576,884, EPO Document, Jan. 1994, Bobr.-12. |