Patent US2533599A successfully refreshed from Google Patents.
US2533599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiving system
Assignee: FR SADIR CARPENTIER SOC
•
Filing: 1948-02-18
•
Granted: 1950-12-12
•
Expires: 1968-02-18
Abstract
No abstract record available.
Inventors
- 👤 Marie Georges Robert Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:43
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1892221A
Cited
GB528061A
Cited
US2362561A
Cited
US2350331A
Cited
US2426176A
Cited
US2443718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |