Number | Date | Country | Kind |
---|---|---|---|
3-083461 | Mar 1991 | JPX | |
3-077881 | Apr 1991 | JPX | |
3-184851 | Jul 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
1951636 | Straubel | Mar 1934 | |
3930713 | Stankewitz et al. | Jan 1976 | |
4127318 | Determann et al. | Nov 1978 | |
4160578 | Gottlieb et al. | Jul 1979 | |
4186993 | Shimizu et al. | Feb 1980 | |
4329014 | Reinheimer et al. | May 1982 | |
4475796 | Kimura | Oct 1984 | |
4487486 | Hayasaka | Dec 1989 | |
4626079 | Nakamura et al. | Dec 1986 | |
4687304 | Piller et al. | Aug 1987 | |
5729070 | Chiu | Mar 1988 |
Number | Date | Country |
---|---|---|
2301597 | Jul 1974 | DEX |
3100662 | Nov 1981 | DEX |
18-21353 | Sep 1943 | JPX |
50-73446 | Jun 1975 | JPX |
55-140811 | Nov 1980 | JPX |
61-270721 | Dec 1986 | JPX |
2-97909 | Apr 1990 | JPX |
2168167 | Jun 1986 | GBX |
Entry |
---|
Patent Abstracts of Japan, vol. 014, No. 565 (P-1143) Dec. 17, 1990 & JP-A-22 42 214 (Nippon Telegraph & Telephone Corp.), Sep. 26, 1990. |
Patent Abstracts of Japan, vol. 012, No. 399 (P-775) Oct. 24, 1988 & JP-A-63 139 316 (Olympus Optical Co., Ltd.(, Jun. 11, 1988. |
Patent Abstracts of Japan, vol. 016, No. 407 (P-1411) Aug. 27, 1992 & JP-A-41 36 807 (Olympus Optical Co., Ltd.), May 11, 1992. |
Patent Abstracts of Japan, vol. 16, No. 309 (P-1382) Jul. 8, 1992 & JP-A-40 86 614 (Olympus Optical Co., Ltd.), May 19, 1992. |