Number | Date | Country | Kind |
---|---|---|---|
87 15533 | Nov 1987 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3679826 | Crowell | Jul 1972 | |
4633287 | Yamazaki | Dec 1986 |
Number | Date | Country |
---|---|---|
0214033 | Mar 1987 | EPX |
0233104 | Aug 1987 | EPX |
Entry |
---|
Patent Abstracts of Japan, vol. 7, No. 255(E-210) [1400], Nov. 12, 1983; & JP-A-58 141 561. |