US2901536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intercarrier sound buzz reducing circuit
Assignee: RCA Corp
•
Filing: 1955-05-31
•
Granted: 1959-08-25
•
Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Lucius Ponder Thomas
- 👤 Hoyt Clyde Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:45
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/60; H04N5/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1915440A
Cited
US2034226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |