US3013224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase shifter controls
Assignee: Electronic Communications Inc
•
Filing: 1959-04-27
•
Granted: 1961-12-12
•
Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Donald D King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:49
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/18; H01P1/182; H03; H03L; H03L7/00; H03L7/02; H03L7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2284612A
Cited
US2798207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |