US2465768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blocking-layer cell
Assignee: Hartford National Bank and Trust Co
•
Filing: 1945-09-18
•
Granted: 1949-03-29
•
Expires: 1965-09-18
Abstract
No abstract record available.
Inventors
- 👤 Willem Christiaan Van Geel
- 👤 Johannes Jacobus Asuerus P Ams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:20
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/047; H10D48/043; H10D48/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2002221A
Cited
US1955397A
Cited
US1986582A
Cited
US2173249A
Cited
US2215999A
Cited
US2328440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |