US2647167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic transducer construction
Assignee: RCA Corp
•
Filing: 1950-03-21
•
Granted: 1953-07-28
•
Expires: 1970-03-21
Abstract
No abstract record available.
Inventors
- 👤 Rettinger Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:17
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/187; G11B5/21; G11B5/17
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2479308A
Cited
US2469444A
Cited
US2468601A
Cited
US2513653A
Cited
US2508485A
Cited
US2532100A
Cited
US2540654A
Cited
US2536272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |