Number | Date | Country | Kind |
---|---|---|---|
56-133364 | Aug 1981 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3307066 | Shapiro et al. | Feb 1967 | |
3466580 | Bull | Sep 1969 | |
3743983 | Holman | Jul 1973 | |
3911321 | Wardley | Oct 1975 | |
3961219 | Bechteler et al. | Jun 1976 | |
4191936 | Colgan, Jr. | Mar 1980 | |
4221992 | Ueda et al. | Sep 1980 | |
4290038 | Yamanaka et al. | Sep 1981 | |
4305022 | Mitamura et al. | Dec 1981 |
Number | Date | Country |
---|---|---|
2225172 | Dec 1972 | DEX |
2521491 | Dec 1975 | DEX |
0019915 | Aug 1975 | JPX |
197806 | Jun 1978 | GBX |
Entry |
---|
E. W. Bull, Printed Scanning Coils, Aug. '68, Wireless World, pp. 260-262. |