Number | Date | Country | Kind |
---|---|---|---|
5-107029 | May 1993 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3330773 | De Hart, Jr. | Jul 1967 | |
5279129 | Ito | Jan 1994 | |
5281295 | Maeda | Jan 1994 |
Entry |
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Patent Abstracts of Japan, vol. 7, No. 226 (E-202), Oct. 7, 1983, JP-A-58115812, Jul. 9, 1983. |
Patent Abstracts of Japan, vol. 8, No. 184 (C-239), Aug. 23, 1984, JP-A-59080325, May 9, 1984. |