Number | Date | Country | Kind |
---|---|---|---|
70007 A/76 | Dec 1976 | ITX |
This a continuation-in-part of our copending application Ser. No. 861,517 filed 16 Dec. 1977 and now abandoned.
Number | Name | Date | Kind |
---|---|---|---|
3976843 | Buchner et al. | Aug 1976 | |
4001521 | Fukata et al. | Jan 1977 | |
4025730 | Sawai | May 1977 |
Number | Date | Country |
---|---|---|
2334566 | Feb 1974 | DEX |
2556354 | Jun 1976 | DEX |
2515769 | Oct 1976 | DEX |
2195797 | Mar 1974 | FRX |
Entry |
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Claasen et al., "A Digital Receiver for Tone Detection Applications", IEEE Transactions on Communications, vol. Com-24, No. 12, Dec. 1976, pp. 1291-1300. |
C. R. Baugh, "Design and Performance of a Digital Multifrequency Receiver", IEEE Transactions on Communications, Jun. 1977, pp. 608-615. |
Number | Date | Country | |
---|---|---|---|
Parent | 861517 | Dec 1977 |