Number | Date | Country | Kind |
---|---|---|---|
93 11303 | Sep 1993 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2291375 | Cass | Jul 1942 | |
2322258 | Strosacker et al. | Jun 1943 | |
2598646 | Maude et al. | May 1952 | |
3079446 | MacFarlane | Feb 1963 | |
3755476 | Crary et al. | Aug 1973 | |
3936508 | Wenzel et al. | Feb 1976 |
Number | Date | Country |
---|---|---|
231886 | Jul 1944 | CHX |
Entry |
---|
Patent Abstract of Japanese Patent No. 56156223 (Feb. 12, 1981). |