Number | Date | Country | Kind |
---|---|---|---|
4-173786 | Jun 1992 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
1112861 | Snyder | Oct 1914 | |
1152247 | Walker | Aug 1915 | |
3923549 | Mabuchi et al. | Dec 1975 | |
4897322 | Jessen | Jan 1990 |
Number | Date | Country |
---|---|---|
2138858 | Nov 1990 | JPX |
3291867 | Dec 1991 | JPX |
Entry |
---|
English language portions of Japanese Publications 2-138858 Nov. 1990 and 3-291867 Dec. 1991. |