US2675432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerative feedback circuit
Assignee: RCA Corp
•
Filing: 1950-04-04
•
Granted: 1954-04-13
•
Expires: 1970-04-04
Abstract
No abstract record available.
Inventors
- 👤 Pan Wen Yuan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:45
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/1638; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/967
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1853178A
Cited
US1967570A
Cited
US2064991A
Cited
US2068112A
Cited
US2162878A
Cited
US2162470A
Cited
US2268672A
Cited
US2452951A
Cited
US2510868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |