Number | Date | Country | Kind |
---|---|---|---|
75 02684 | Jan 1975 | FRX | |
75 36426 | Nov 1975 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3028385 | Batzer et al. | Apr 1962 | |
3247043 | Cardina | Apr 1966 | |
3449340 | Orth et al. | Jun 1969 |
Number | Date | Country |
---|---|---|
1,267,432 | Jun 1961 | FRX |
2,070,240 | Sep 1971 | FRX |
Entry |
---|
Japanese Application 74/040879, 11/68. |