Number | Name | Date | Kind |
---|---|---|---|
2422631 | Olin et al. | Jun 1947 | |
3513200 | Biale | May 1970 | |
4096150 | Berthoux et al. | Jun 1978 |
Number | Date | Country |
---|---|---|
1072796 | Jun 1967 | GBX |
1178308 | Jan 1970 | GBX |
1378185 | Dec 1974 | GBX |
1468773 | Mar 1977 | GBX |
Entry |
---|
UK Patent Application, GB, 2044757, 4/1980. |