Patent US3024452A successfully refreshed from Google Patents.
Patent US2719250A successfully refreshed from Google Patents.
US2719250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic register circuit
Assignee: Hartford National Bank and Trust Co
•
Filing: 1952-10-01
•
Granted: 1955-09-27
•
Expires: 1972-10-01
Abstract
No abstract record available.
Inventors
- 👤 Six Willem
- 👤 Johannes Theodorus Anto Lottum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:14
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/26; G11C11/28; H; H03; H03K; H03K23/00; H03K23/82; H04; H04M; H04M3/00; H04M3/60; H04M3/64; H04Q; H04Q3/00; H04Q3/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2623108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |