Number | Name | Date | Kind |
---|---|---|---|
3409217 | Gentry | Nov 1968 | |
3821562 | Davis et al. | Jun 1974 | |
3829849 | Stauffer | Aug 1974 | |
4552465 | Anderson | Nov 1985 | |
5061083 | Grimm et al. | Oct 1991 |
Number | Date | Country |
---|---|---|
1941816 | Apr 1971 | DEX |
1948461 | Apr 1971 | DEX |
49-25813 | Jul 1974 | JPX |
Entry |
---|
Patent Abstracts of Japan [vol. 007, No. 125, P-200, May 31, 1983] re JP 58 042940 A. |