Patent US2941045A successfully refreshed from Google Patents.
US2941045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording
Assignee: Individual
•
Filing: 1954-01-29
•
Granted: 1960-06-14
•
Expires: 1974-01-29
Abstract
No abstract record available.
Inventors
- 👤 Lawrence H Connell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:17
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/1272; G11B5/17; G11B5/187; G11B5/23
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2361753A
Cited
US2418542A
Cited
US2479308A
Cited
US2532100A
Cited
US2693508A
Cited
US2536272A
Cited
US2647167A
Cited
US2674659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |