共 217 条
[71]
Huisman H. O., 1958, Patent, Patent No. [DE1041950, 1041950]
[72]
HUISMAN HO, 1956, RECL TRAV CHIM PAY B, V75, P977
[73]
Humphlett W. J., 1954, Patent, Patent No. [US2676992, 2676992]
[74]
Humphlett W. J., 1954, Patent, Patent No. [US2676990, 2676990]
[77]
Isler O., 1948, Patent, Patent No. [US2451739, 2451739]
[78]
Isler O., 1948, Patent, Patent No. [US2451735, 2451735]