US2568560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slotted prismatic antenna
Assignee: RCA Corp
•
Filing: 1946-12-27
•
Granted: 1951-09-18
•
Expires: 1966-12-27
Abstract
No abstract record available.
Inventors
- 👤 John E Pauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:15
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/10; H01Q13/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2206923A
Cited
US2238770A
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US2234293A
Cited
US2405242A
Cited
US2411872A
Cited
US2414266A
Cited
US2434253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |