共 10 条
[1]
BOWERS A, 1962, Patent No. 1126384
[2]
CLAUBERG C, 1930, ZENTRALBL GYNAKOL, V54, P2757
[4]
MCQUARRIE HG, 1972, OBGYN DIGEST, P21
[5]
RINGOLD HJ, 1962, Patent No. 3028401
[10]
SHROFF AP, 1970, Patent No. 3501508