US2868970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal-to-noise responsive system
Assignee: Hazeltine Research Inc
•
Filing: 1953-10-27
•
Granted: 1959-01-13
•
Expires: 1973-10-27
Abstract
No abstract record available.
Inventors
- 👤 Robert K Aitken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:47
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2498676A
Cited
US2440261A
Cited
US2603742A
Cited
US2691098A
Cited
US2455996A
Cited
US2548684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |