Number | Date | Country | Kind |
---|---|---|---|
85 18696 | Dec 1985 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2359302 | Curtis | Oct 1944 | |
3280452 | Merritt | Oct 1966 | |
4151441 | Puhak | Apr 1979 |
Number | Date | Country |
---|---|---|
801709 | Aug 1936 | FRX |
Entry |
---|
Patents Abstracts of Japan, vol. 3, No. 92 (E-128), Aug. 4, 1979, p. 48 E 128; & JP-A-54 69 952 (Tokyo Shibaura Denki K.K.) 06-05-1979. |
Patents Abstracts of Japan, vol. 1, No. 8, Mar. 16, 1977, p. 198 E 76; & JP A 51 113 451 (Tokyo Shibaura Denki K.K.) 10-06-1976. |