US2723348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency resonant circuits
Assignee: Telephonics Corp
•
Filing: 1951-06-19
•
Granted: 1955-11-08
•
Expires: 1971-06-19
Abstract
No abstract record available.
Inventors
- 👤 Jr John F Dreyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:20
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/38; H03; H03J; H03J3/00; H03J3/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1714662A
Cited
US1741152A
Cited
US1957243A
Cited
US2001600A
Cited
US2540137A
Cited
US2542416A
Cited
US2384504A
Cited
CH258129A
Cited
FR970938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |