US2527664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave-signal translating system for selected band of wave-signal frequencies
Assignee: Hazeltine Research Inc
•
Filing: 1945-11-08
•
Granted: 1950-10-31
•
Expires: 1965-11-08
Abstract
No abstract record available.
Inventors
- 👤 Harold A Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:06
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0123
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2234584A
Cited
US2220922A
Cited
US2194543A
Cited
US2419557A
Cited
US2410656A
Cited
US2414115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |