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Telent Technologies Services Ltd

Telent Tec

Active Patents

0

Total Holdings

16

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US4908787A	Interpolator/decimator filter structure and a notch filter …	Expired / Lapsed	1986-08-08	1990-03-13	9	Details
US4648134A	Optical receivers	Expired / Lapsed	1984-09-21	1987-03-03	10	Details
US4057797A	All digital delta to PCM converter	Expired / Lapsed	1975-12-03	1977-11-08	7	Details
US3993978A	Solid state crosspoint circuit arrangement for use in a tel…	Expired / Lapsed	1974-09-26	1976-11-23	13	Details
US3883855A	Control system for a digital switching network	Expired / Lapsed	1974-04-05	1975-05-13	14	Details
US3781081A	Electro-optical waveguide arrangements	Expired / Lapsed	1972-04-17	1973-12-25	11	Details
US3766322A	Data switching exchanges	Expired / Lapsed	1971-11-18	1973-10-16	14	Details
US3729591A	Path finding system for a multi-stage switching network	Expired / Lapsed	1970-11-25	1973-04-24	30	Details
US3715503A	Automatic transfer arrangement for telephone system	Expired / Lapsed	1971-02-16	1973-02-06	6	Details
US3692946A	Special service routing	Expired / Lapsed	1970-12-10	1972-09-19	11	Details
US3671677A	Outgoing register sender system	Expired / Lapsed	1970-07-23	1972-06-20	61	Details
US3662349A	Stored program system	Expired / Lapsed	1969-11-26	1972-05-09	84	Details
US3660600A	Path finding system for multi-stage switching matrix	Expired / Lapsed	1970-05-15	1972-05-02	34	Details
US3653018A	Monitor circuit	Expired / Lapsed	1970-06-08	1972-03-28	11	Details
US3643229A	Interrupt arrangement for data processing systems	Expired / Lapsed	1969-11-26	1972-02-15	20	Details
US3639693A	Time division multiplex data switch	Expired / Lapsed	1968-11-22	1972-02-01	13	Details