US2486872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Receiving antenna
Assignee: HENRY H HIRVONEN
•
Filing: 1946-03-04
•
Granted: 1949-11-01
•
Expires: 1966-03-04
Abstract
No abstract record available.
Inventors
- 👤 Verlois R Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:41
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/24; H01Q21/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2097491A
Cited
US2110278A
Cited
US2135344A
Cited
US2116734A
Cited
US2245693A
Cited
US2358520A
Cited
US2280738A
Cited
US2364084A
Cited
US2374271A
Cited
US2410597A
Cited
US2420967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |