US2492772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loop antenna
Assignee: General Electric Co
•
Filing: 1946-05-09
•
Granted: 1949-12-27
•
Expires: 1966-05-09
Abstract
No abstract record available.
Inventors
- 👤 Lewis H Van Billiard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1826437A
Cited
US1812695A
Cited
FR615018A
Cited
GB513961A
Cited
US2215422A
Cited
US2318361A
Cited
US2401472A
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 |