Patent Explorer
Browse, filter, and analyze 338 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US4412123A | Laminated electric heat generating member for reflow soldering devices | AT&T Inc | Expired / Lapsed | 1980-05-09 | 1983-10-25 | 2000-05-09 | 0.0 yrs | 7 | |
| US4107474A | Bipolar transistor switching network crosspoint | AT&T Inc | Expired / Lapsed | 1977-05-31 | 1978-08-15 | 1997-05-31 | 0.0 yrs | 16 | |
| US4034347A | Method and apparatus for controlling a multiprocessor system | AT&T Inc | Expired / Lapsed | 1975-08-08 | 1977-07-05 | 1995-08-08 | 0.0 yrs | 34 | |
| US3979733A | Digital data communications system packet switch | AT&T Inc | Expired / Lapsed | 1975-05-09 | 1976-09-07 | 1995-05-09 | 0.0 yrs | 18 | |
| US3866185A | Method and apparatus for gathering peak load traffic data | AT&T Inc | Expired / Lapsed | 1974-01-16 | 1975-02-11 | 1994-01-16 | 0.0 yrs | 17 | |
| US3860405A | Bonding of optical components | AT&T Inc | Expired / Lapsed | 1972-11-13 | 1975-01-14 | 1992-11-13 | 0.0 yrs | 7 | |
| US3793541A | Optical stimulated emission devices employing optical guiding | AT&T Inc | Expired / Lapsed | 1970-12-21 | 1974-02-19 | 1990-12-21 | 0.0 yrs | 35 | |
| US3770350A | Method utilizing an optical fiber raman cell | AT&T Inc | Expired / Lapsed | 1972-07-24 | 1973-11-06 | 1992-07-24 | 0.0 yrs | 6 | |
| US3718781A | Integrity check equipment for automatic trunk substitution | AT&T Inc | Expired / Lapsed | 1971-12-30 | 1973-02-27 | 1991-12-30 | 0.0 yrs | 0 | |
| US3717850A | Programmed data processing with facilitated transfers | AT&T Inc | Expired / Lapsed | 1972-03-17 | 1973-02-20 | 1992-03-17 | 0.0 yrs | 80 | |
| US3673335A | Switching of time division multiplex lines and analog trunks through telephone central offices | AT&T Inc | Expired / Lapsed | 1970-08-24 | 1972-06-27 | 1990-08-24 | 0.0 yrs | 11 | |
| US3652993A | Rapid polling method for digital communications network | AT&T Inc | Expired / Lapsed | 1970-07-24 | 1972-03-28 | 1990-07-24 | 0.0 yrs | 13 | |
| US3650454A | Device for bonding with a compliant medium | AT&T Inc | Expired / Lapsed | 1969-11-21 | 1972-03-21 | 1989-11-21 | 0.0 yrs | 23 | |
| US3623019A | Programmed time-out monitoring arrangement using map timing | AT&T Inc | Expired / Lapsed | 1969-11-26 | 1971-11-23 | 1989-11-26 | 0.0 yrs | 15 | |
| US3573745A | Group queuing | AT&T Inc | Expired / Lapsed | 1968-12-04 | 1971-04-06 | 1988-12-04 | 0.0 yrs | 17 | |
| US3573381A | Time division switching system | AT&T Inc | Expired / Lapsed | 1969-03-26 | 1971-04-06 | 1989-03-26 | 0.0 yrs | 26 | |
| US3569996A | Optical heterodyne receiver with pulse widening or stretching | AT&T Inc | Expired / Lapsed | 1968-06-07 | 1971-03-09 | 1988-06-07 | 0.0 yrs | 11 | |
| US3553606A | System for providing adjusting signals to a transversal filter equalizer | AT&T Inc | Expired / Lapsed | 1969-04-21 | 1971-01-05 | 1989-04-21 | 0.0 yrs | 0 | |
| US3553654A | Fault isolation arrangement for distributed logic memories | AT&T Inc | Expired / Lapsed | 1969-03-28 | 1971-01-05 | 1989-03-28 | 0.0 yrs | 0 | |
| US3543243A | Data receiving arrangement | AT&T Inc | Expired / Lapsed | 1967-09-13 | 1970-11-24 | 1987-09-13 | 0.0 yrs | 0 |
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