Number | Date | Country | Kind |
---|---|---|---|
10573/78 | Oct 1978 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
3508828 | Froome et al. | Apr 1970 | |
3577144 | Girault | May 1971 | |
3832056 | Shipp et al. | Aug 1974 | |
4077718 | Graham, Jr. et al. | Mar 1978 | |
4093380 | White | Jun 1978 |
Number | Date | Country |
---|---|---|
596559 | Mar 1978 | CHX |
Entry |
---|
A. W. Kondraschkow, "Electrooptical Dist. Meas." (German), Berlin, 1961, Veb Verlag fur Bauwesen, p. 169; 356-5. |