US2837726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reluctance tuned radio frequency coil
Assignee: Individual
•
Filing: 1953-07-01
•
Granted: 1958-06-03
•
Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Pearlman William
- 👤 Robert L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:27
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22103E
Cited
US2343101A
Cited
US2283926A
Cited
US2346584A
Cited
US2477979A
Cited
US2482471A
Cited
US2724091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |