共 51 条
[41]
PLAUSON H, 1921, Patent No. 1395729
[42]
ROSSI LM, 1936, Patent No. 2066016
[43]
SATOW S, 1917, Patent No. 1245980
[44]
STURKEN O, 1936, Patent No. 2053850
[45]
Taylor R. L., 1936, CHEM METALLURGICAL E, V43, P172
[46]
TRIPET R, 1937, Patent No. 808497
[47]
WEYGANG C, 1916, Patent No. 111171
[48]
WIECHMANN FG, 1913, Patent No. 1061346
[49]
WIECHMANN FG, 1915, Patent No. 1135340
[50]
WIECHMANN FG, 1917, Patent No. 1218146