Number | Date | Country | Kind |
---|---|---|---|
101 13 182 | Mar 2001 | DE |
Number | Name | Date | Kind |
---|---|---|---|
605587 | Rudolph et al. | Jun 1898 | A |
2402497 | Johnson | Jun 1946 | A |
Number | Date | Country |
---|---|---|
34 41 064 | May 1986 | DE |
Entry |
---|
US 2002/0148522 A1 Gunter Hupertz, Oct. 17, 2002. |