Patent Explorer
Browse, filter, and analyze 7 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2980225A | Apparatus to produce printed and control records and to utilize the latter for automatic control purposes | Underwood Corp | Expired / Lapsed | 1958-04-01 | 1961-04-18 | 1978-04-01 | 0.0 yrs | 0 | |
| US2910668A | Information processing system | Underwood Corp | Expired / Lapsed | 1954-03-03 | 1959-10-27 | 1974-03-03 | 0.0 yrs | 0 | |
| US2905931A | Comparator | Underwood Corp | Expired / Lapsed | 1955-02-03 | 1959-09-22 | 1975-02-03 | 0.0 yrs | 0 | |
| US2902092A | Punch coding records from a typewriter keyboard | Underwood Corp | Expired / Lapsed | 1955-12-29 | 1959-09-01 | 1975-12-29 | 0.0 yrs | 0 | |
| US2892933A | Frequency divider | Underwood Corp | Expired / Lapsed | 1953-12-16 | 1959-06-30 | 1973-12-16 | 0.0 yrs | 0 | |
| US2885655A | Binary relative magnitude comparator | Underwood Corp | Expired / Lapsed | 1954-04-09 | 1959-05-05 | 1974-04-09 | 0.0 yrs | 0 | |
| US2861385A | Typewriter support in carrying case | Underwood Corp | Expired / Lapsed | 1955-09-14 | 1958-11-25 | 1975-09-14 | 0.0 yrs | 0 |