Patent Explorer
Browse, filter, and analyze 20 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3919479A | Broadcast signal identification system | TNC US Holdings Inc | Expired / Lapsed | 1974-04-08 | 1975-11-11 | 1994-04-08 | 0.0 yrs | 16 | |
| US3772649A | Data interface unit for insuring the error free transmission of fixed-length data sets which are transmitted repeatedly | TNC US Holdings Inc | Expired / Lapsed | 1972-02-17 | 1973-11-13 | 1992-02-17 | 0.0 yrs | 5 | |
| US3408629A | Data handling system | TNC US Holdings Inc | Expired / Lapsed | 1966-01-10 | 1968-10-29 | 1986-01-10 | 0.0 yrs | 0 | |
| US3405393A | Data handling system | TNC US Holdings Inc | Expired / Lapsed | 1965-10-15 | 1968-10-08 | 1985-10-15 | 0.0 yrs | 0 | |
| US3323112A | Data handling system | TNC US Holdings Inc | Expired / Lapsed | 1964-11-12 | 1967-05-30 | 1984-11-12 | 0.0 yrs | 2 | |
| US3289170A | Data transmitting and receiving system using pulse width modulation | TNC US Holdings Inc | Expired / Lapsed | 1962-10-24 | 1966-11-29 | 1982-10-24 | 0.0 yrs | 2 | |
| US3148245A | System for determining the listening habits of wave signal receiver users | TNC US Holdings Inc | Expired / Lapsed | 1958-12-22 | 1964-09-08 | 1978-12-22 | 0.0 yrs | 2 | |
| US3070798A | System for determining the listening habits of wave signal receiver users | TNC US Holdings Inc | Expired / Lapsed | 1958-06-09 | 1962-12-25 | 1978-06-09 | 0.0 yrs | 0 | |
| US2881417A | Decimal-to-binary converter for system for recording listening or viewing habits of wave signal receiver users | TNC US Holdings Inc | Expired / Lapsed | 1953-09-21 | 1959-04-07 | 1973-09-21 | 0.0 yrs | 0 | |
| US2660509A | Recording apparatus | TNC US Holdings Inc | Expired / Lapsed | 1948-11-04 | 1953-11-24 | 1968-11-04 | 0.0 yrs | 0 | |
| US2660511A | Lockout and recycling device for an apparatus for determining the listening habits of wave signal receiver users | TNC US Holdings Inc | Expired / Lapsed | 1947-10-24 | 1953-11-24 | 1967-10-24 | 0.0 yrs | 0 | |
| US2660662A | Search signal apparatus for determining the listening habits of wave signal receiver users | TNC US Holdings Inc | Expired / Lapsed | 1947-10-24 | 1953-11-24 | 1967-10-24 | 0.0 yrs | 0 | |
| US2654651A | Remote radio receiver tuning indicating apparatus | TNC US Holdings Inc | Expired / Lapsed | 1945-10-29 | 1953-10-06 | 1965-10-29 | 0.0 yrs | 0 | |
| US2652310A | System and apparatus for determining the listening habits of wave signal receiver users | TNC US Holdings Inc | Expired / Lapsed | 1947-10-24 | 1953-09-15 | 1967-10-24 | 0.0 yrs | 0 | |
| US2630366A | System for determining the audience response to programs broadcast from wave signal transmitting stations | TNC US Holdings Inc | Expired / Lapsed | 1946-11-09 | 1953-03-03 | 1966-11-09 | 0.0 yrs | 0 | |
| US2630365A | System for determining listening habits of radio receiver users | TNC US Holdings Inc | Expired / Lapsed | 1949-05-19 | 1953-03-03 | 1969-05-19 | 0.0 yrs | 0 | |
| US2513360A | System for determining the listening habits of wave signal receiver users | TNC US Holdings Inc | Expired / Lapsed | 1947-01-09 | 1950-07-04 | 1967-01-09 | 0.0 yrs | 0 | |
| US2484733A | System and apparatus for recording the listening habits of wave signal receiver users | TNC US Holdings Inc | Expired / Lapsed | 1948-02-11 | 1949-10-11 | 1968-02-11 | 0.0 yrs | 0 | |
| US2483573A | Apparatus for determining the listening habits of wave signal receiver users | TNC US Holdings Inc | Expired / Lapsed | 1943-11-22 | 1949-10-04 | 1963-11-22 | 0.0 yrs | 0 | |
| US2439201A | Remote radio receiver tuning indicating apparatus | TNC US Holdings Inc | Expired / Lapsed | 1945-10-29 | 1948-04-06 | 1965-10-29 | 0.0 yrs | 0 |