Number | Date | Country | Kind |
---|---|---|---|
59-49259 | Mar 1984 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3783978 | Hamilton | Jan 1974 | |
4069897 | Tomate et al. | Jan 1978 | |
4106594 | Kirsch et al. | Aug 1978 | |
4238005 | Watanabe et al. | Dec 1980 | |
4382489 | Suzuki et al. | May 1983 |
Entry |
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"An Earthquake-Emergency Landing Device with a Primary-Wave Sensor for Elevators," Suzuki et al, Mitsubishi Electric Advance, vol. 15, Mar. 1981, pp. 10-11. |