US2507915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling circuit
Assignee: RCA Corp
•
Filing: 1946-08-28
•
Granted: 1950-05-16
•
Expires: 1966-08-28
Abstract
No abstract record available.
Inventors
- 👤 Nils E Lindenblad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:15
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1188531A
Cited
US1416790A
Cited
US1659945A
Cited
US2147809A
Cited
US2341408A
Cited
US2424156A
Cited
US2422190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |