US2549783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna
Assignee: STC PLC
•
Filing: 1945-06-20
•
Granted: 1951-04-24
•
Expires: 1965-06-20
Abstract
No abstract record available.
Inventors
- 👤 Rosa Louis A De
- 👤 Frank J Lundburg
- 👤 Capen Harold Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:20
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2297202A
Cited
US2234293A
Cited
US2369808A
Cited
US2405242A
Cited
US2414266A
Cited
US2407068A
Cited
US2455224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |