US2724049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency communication system
Assignee: General Electric Co
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Filing: 1952-03-26
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Granted: 1955-11-15
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Expires: 1972-03-26
Abstract
No abstract record available.
Inventors
- 👤 Charles L Rouault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:14
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W88/022; H04W88/025; H04W88/027
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) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |