Number | Date | Country | Kind |
---|---|---|---|
803/91 | Mar 1991 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
2805558 | Knight | Sep 1957 | |
4275565 | Beck | Jun 1981 |
Number | Date | Country |
---|---|---|
2534446 | Feb 1977 | DEX |
3114449 | Oct 1982 | DEX |
3641152 | Jun 1988 | DEX |
Entry |
---|
Seals and Sealing Handbook: Jul. 1, 1986 pp. 237, 239, 241. |