Number | Name | Date | Kind |
---|---|---|---|
3867769 | Schow et al. | Feb 1975 | |
4124944 | Blair | Nov 1978 | |
4132014 | Schow | Jan 1979 |
Number | Date | Country |
---|---|---|
109278 | Sep 1975 | DDX |
Entry |
---|
"Apparatus for Training Welders," V. P. Lugin et al., Svarochnoe Proizvodstvo, Moscow, No. 9, pp. 50-51. |