共 17 条
[1]
BROOKS HK, Patent No. 779583
[2]
CERF L, Patent No. 698632
[3]
FLICK E, 1909, Patent No. 25121
[4]
FLICK E, Patent No. 217336
[5]
FRITSCHE F, Patent No. 910524
[6]
FRITSCHE F, 1908, Patent No. 1351
[7]
GLADDING EK, 1943, PAP TRADE J, V116, P26
[9]
HALLER R, Patent No. 229623
[10]
HALLER R, Patent No. 665268