US2611087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for radiating circularly polarized waves
Assignee: Individual
•
Filing: 1946-01-29
•
Granted: 1952-09-16
•
Expires: 1966-01-29
Abstract
No abstract record available.
Inventors
- 👤 Alford Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:43
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/165; H01P1/17; H01Q; H01Q13/00; H01Q13/02; H01Q13/0241
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2129714A
Cited
US2129669A
Cited
US2255042A
Cited
US2317464A
Cited
US2412320A
Cited
US2416675A
Cited
US2438119A
Cited
US2425345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |