US2542841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency coupling apparatus
Assignee: RCA Corp
•
Filing: 1946-02-18
•
Granted: 1951-02-20
•
Expires: 1966-02-18
Abstract
No abstract record available.
Inventors
- 👤 Wesley M Roberds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:04
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1140843A
Cited
US1483442A
Cited
US1703408A
Cited
US1942786A
Cited
GB369889A
Cited
US2274169A
Cited
US2366290A
Cited
US2404404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |