US2990522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal modulator
Assignee: American Electronic Laboratories Inc
•
Filing: 1959-07-13
•
Granted: 1961-06-27
•
Expires: 1979-07-13
Abstract
No abstract record available.
Inventors
- 👤 Riebman Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:01
CPC Classifications
H; H03; H03C; H03C7/00; H03C7/02; H03C7/025; H03C7/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |