共 28 条
[21]
TAYLOR AL, 1975, Patent No. 3861879
[22]
TAYLOR GW, 1983, Patent No. 4404490
[24]
1979, TECHNICAL BROCHURE 3
[25]
1983, Patent No. 895397
[26]
1980, Patent No. 4238487
[27]
1982, Patent No. 4551425
[28]
1983, Patent No. 84736