Patent US2756378A successfully refreshed from Google Patents.
US2756378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective circuit
Assignee: RCA Corp
•
Filing: 1953-05-27
•
Granted: 1956-07-24
•
Expires: 1973-05-27
Abstract
No abstract record available.
Inventors
- 👤 Howard M Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:57
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2261787A
Cited
US2625265A
Cited
US2591053A
Cited
US2635208A
Cited
US2607018A
Cited
US2638562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |