Patent US4007443A successfully refreshed from Google Patents.
Patent US2788786A successfully refreshed from Google Patents.
US2606318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar system having spiral and conical scanning antenna and tridimensional indicator
Assignee: Individual
•
Filing: 1944-04-19
•
Granted: 1952-08-05
•
Expires: 1964-04-19
Abstract
No abstract record available.
Inventors
- 👤 Leland J Haworth
- 👤 Edward M Purcell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:30
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/422; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2083242A
Cited
US2105537A
Cited
US2169553A
Cited
US2231929A
Cited
US2189549A
Cited
US2412702A
Cited
US2449976A
Cited
US2423104A
Cited
US2406953A
Cited
US2426218A
Cited
US2500552A
Cited
US2514828A
Cited
US2436655A
Cited
US2419239A
Cited
US2437286A
Cited
US2427905A
Cited
US2432330A
Cited
US2416591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |