US2911601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for controlling the transmission of electromagnetic waves
Assignee: Individual
•
Filing: 1955-05-13
•
Granted: 1959-11-03
•
Expires: 1975-05-13
Abstract
No abstract record available.
Inventors
- 👤 John B Gunn
- 👤 Cyril A Hogarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:49
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/24; H01; H01P; H01P1/00; H01P1/22; H01P1/222; H03C; H03C7/00; H03C7/02; H03C7/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2430130A
Cited
US2532157A
Cited
US2649574A
Cited
US2692950A
Cited
US2801389A
Cited
US2743322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |