Number | Date | Country | Kind |
---|---|---|---|
92 02725 | Mar 1992 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3382479 | Cooney | May 1968 | |
4082411 | Storch | Apr 1978 | |
4966564 | Foote | Oct 1990 |
Number | Date | Country |
---|---|---|
737823 | Jul 1943 | DEX |
6912957 | Mar 1969 | DEX |
2028177 | Dec 1971 | DEX |
2138989 | Jan 1973 | DEX |
246866 | Jun 1987 | DDX |
447304 | Mar 1968 | CHX |
111126 | Nov 1917 | GBX |
436951 | Nov 1926 | GBX |
Entry |
---|
Patent Abstracts of Japan, vol. 016, No. 037 (E-1160) Jan. 29, 1992 & JP-A-32 45 420 (Nisin Electric) Nov. 1, 1991. |
Patent Abstracts of Japan, vol. 014, No. 257 (E-936) Jun. 4, 1990 & JP-A-20 78 115 (Fuji Electric) Mar. 19, 1990. |