Number | Date | Country | Kind |
---|---|---|---|
5-029199 | Feb 1993 | JPX | |
5-035980 | Feb 1993 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
1395437 | Liebau | Nov 1921 | |
3216349 | Kraft | Nov 1965 | |
3387499 | Bruderlein | Jun 1968 | |
3423614 | Poteate et al. | Jan 1969 | |
3477050 | Hinger | Nov 1969 | |
4101009 | Hehl et al. | Jul 1978 | |
4282938 | Minamidate | Aug 1981 | |
4314623 | Karokawa | Feb 1982 | |
4471331 | Wyatt | Sep 1984 | |
4935651 | Hong et al. | Jun 1990 |
Number | Date | Country |
---|---|---|
6606380 | Mar 1965 | DEX |
2240761 | Mar 1973 | DEX |
4001981 | Jul 1990 | DEX |
744041 | Feb 1956 | GBX |
2208419 | Mar 1989 | GBX |
WO9003524 | Apr 1990 | WOX |
Entry |
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Patent Abstracts of Japan, vol. 13, No. 560, (N-906) (3908), Dec. 13, 1989, JP-A-1 234 636, Sep. 19, 1989. |
Proceedings of 8th Japan Earthquake Engineering Symposium, Satoru Aizawa, et al., "Experimental Study of Dual Axis Active Mass Damper", pp. 1899-1904, 1990. |