Patent Explorer
Browse, filter, and analyze 13 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2752496A | Circuit arrangement for automatic resonance tuning of a high-frequency generator, more particularly for the purpose of therapy | Hartford National Bank and Trust Co | Expired / Lapsed | 1952-02-26 | 1956-06-26 | 1972-02-26 | 0.0 yrs | 0 | |
| US2751318A | Method of manufacturing coils | Hartford National Bank and Trust Co | Expired / Lapsed | 1954-05-14 | 1956-06-19 | 1974-05-14 | 0.0 yrs | 2 | |
| US2736890A | Color-television camera device | Hartford National Bank and Trust Co | Expired / Lapsed | 1952-07-15 | 1956-02-28 | 1972-07-15 | 0.0 yrs | 0 | |
| US2662214A | Frequency-modulated oscillator | Hartford National Bank and Trust Co | Expired / Lapsed | 1951-07-30 | 1953-12-08 | 1971-07-30 | 0.0 yrs | 0 | |
| US2616813A | Condenser | Hartford National Bank and Trust Co | Expired / Lapsed | 1949-10-29 | 1952-11-04 | 1969-10-29 | 0.0 yrs | 2 | |
| US2434236A | Ceramic insulator | Hartford National Bank and Trust Co | Expired / Lapsed | 1943-01-18 | 1948-01-06 | 1963-01-18 | 0.0 yrs | 0 | |
| US2428400A | Blocking-layer cells comprising one or more grids embedded in the blocking layer | Hartford National Bank and Trust Co | Expired / Lapsed | 1943-01-18 | 1947-10-07 | 1963-01-18 | 0.0 yrs | 0 | |
| US2406309A | Frequency stabilization | Hartford National Bank and Trust Co | Expired / Lapsed | 1942-11-03 | 1946-08-20 | 1962-11-03 | 0.0 yrs | 0 | |
| US2330950A | Ceramic insulator and method of making the same | Hartford National Bank and Trust Co | Expired / Lapsed | 1940-02-28 | 1943-10-05 | 1960-02-28 | 0.0 yrs | 0 | |
| US2302087A | Blocking-layer rectifier | Hartford National Bank and Trust Co | Expired / Lapsed | 1939-11-13 | 1942-11-17 | 1959-11-13 | 0.0 yrs | 0 | |
| US2265216A | Multiplex telephony system | Hartford National Bank and Trust Co | Expired / Lapsed | 1939-04-20 | 1941-12-09 | 1959-04-20 | 0.0 yrs | 0 | |
| US2265203A | Telephony | Hartford National Bank and Trust Co | Expired / Lapsed | 1939-04-26 | 1941-12-09 | 1959-04-26 | 0.0 yrs | 0 | |
| US2263369A | Multiplex telephony system | Hartford National Bank and Trust Co | Expired / Lapsed | 1940-01-08 | 1941-11-18 | 1960-01-08 | 0.0 yrs | 0 |