Number | Date | Country | Kind |
---|---|---|---|
2-139280 | May 1990 | JPX | |
2-172882 | Jun 1990 | JPX | |
2-172883 | Jun 1990 | JPX | |
2-291088 | Oct 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4172859 | Epstein | Oct 1979 | |
4174358 | Epstein | Nov 1979 |
Number | Date | Country |
---|---|---|
0180302 | Jul 1986 | EPX |
51-144452 | May 1976 | JPX |
5847419 | Mar 1977 | JPX |
54-123158 | Sep 1979 | JPX |
55-44108 | Nov 1980 | JPX |
56-55450 | May 1981 | JPX |
58-42639 | Mar 1983 | JPX |
59-232135 | Dec 1984 | JPX |
60-49018 | Mar 1985 | JPX |
60-58447 | Apr 1985 | JPX |
60-118735 | Jun 1985 | JPX |
60-130580 | Jul 1985 | JPX |
60-215052 | Oct 1985 | JPX |
60-219254 | Nov 1985 | JPX |
60-219257 | Nov 1985 | JPX |
61-60744 | Mar 1986 | JPX |
61-60746 | Mar 1986 | JPX |
64-75547 | Mar 1989 | JPX |
64-87645 | Mar 1989 | JPX |
1-174550 | Jul 1989 | JPX |
1-193351 | Aug 1989 | JPX |
1-236266 | Sep 1989 | JPX |
Entry |
---|
Patent Abstracts of Japan vol. 13, No. 21 (C-560) (3369) Jan. 18, 1989 and JP-A-63 225 619 (Kanegafuchi) Sep. 20, 1988. |