US2492358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna reflector system
Assignee: STC PLC
•
Filing: 1945-10-12
•
Granted: 1949-12-27
•
Expires: 1965-10-12
Abstract
No abstract record available.
Inventors
- 👤 Trevor H Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:11
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1647283A
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US2072262A
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US2064171A
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US2130389A
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US2175254A
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US2272312A
Cited
US2281196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |