Number | Date | Country | Kind |
---|---|---|---|
61-3905 | Jan 1986 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4238298 | Tsuru et al. | Dec 1980 | |
4667150 | Hausler et al. | May 1987 |
Number | Date | Country |
---|---|---|
2527772 | Feb 1983 | FRX |
55-47433 | Apr 1980 | JPX |
Entry |
---|
Zen et al., Technical Note of The Port and Harbor Research Institute Ministry of Transportation, Japan, Mar. 1982, p. 5. |