Number | Date | Country | Kind |
---|---|---|---|
4570/85 | Oct 1985 | CHX |
This is a divisional of application Ser. No. 917,112 filed on Oct. 8, 1986 now U.S. Pat. No. 4,801,701.
Number | Name | Date | Kind |
---|---|---|---|
4522754 | Hilti | Jun 1985 |
Number | Date | Country | |
---|---|---|---|
Parent | 917112 | Oct 1986 |