US2921271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmitter stabilizer
Assignee: Collins Radio Co
•
Filing: 1957-02-06
•
Granted: 1960-01-12
•
Expires: 1977-02-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Collins
- 👤 Robert M Mitchell
- 👤 Veikko R Saari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:45
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/02; H03L7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2182790A
Cited
US2245627A
Cited
US2334726A
Cited
US2404852A
Cited
US2394393A
Cited
US2755383A
Cited
US2888646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |