共 61 条
- [1] BRITTON EC, 1943, Patent No. 2333633
- [2] BROWNING GL, 1945, Patent No. 2380405
- [3] BROWNING GL, 1945, Patent No. 2380400
- [4] BROWNING GL, 1945, Patent No. 2380404
- [5] BROWNING GL, 1945, Patent No. 2380401
- [6] BROWNING GL, 1945, Patent No. 2380403
- [7] BURLESON MN, 1947, MODERN PLASTICS, V24, P108
- [8] CAMRAS M, 1944, Patent No. 2351003
- [9] CAMRAS M, 1944, Patent No. 2351007
- [10] CAMRAS M, 1944, Patent No. 2351006