Number | Date | Country | Kind |
---|---|---|---|
13748/69 | Sep 1969 | CH |
This is a division of application Ser. No. 69,457 filed Sept. 3, 1970. This application claims priority from Swiss application 13748/69 filed Sept. 10, 1969.
Number | Name | Date | Kind |
---|---|---|---|
2465882 | Kendall et al. | Mar 1949 | |
2586306 | Copenhaver | Feb 1952 | |
3723531 | Tobias et al. | Mar 1973 | |
3820975 | Poje | Jun 1974 | |
3845134 | Helmluger et al. | Oct 1974 |
Number | Date | Country | |
---|---|---|---|
Parent | 69457 | Sep 1970 |