Number | Date | Country | Kind |
---|---|---|---|
1-56192 | Mar 1989 | JPX | |
1-91892 | Apr 1989 | JPX | |
1-117556 | May 1989 | JPX | |
1-166580 | Jun 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3382261 | Kittredge et al. | May 1968 |
Entry |
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Patent Abstracts of Japan, unexamined application, C field, vol. 10, No. 310, Oct. 22, 1986, p. 155 C 379 Kokai-no. 61-122 255. |
Patent Abstracts of Japan, unexamined applications, C field, vol. 9, No. 241, Sep. 27, 1985, p. 50 C 306, Kokai-no. 60-99 133. |