Patent US1744890A successfully refreshed from Google Patents.
Patent US2970469A successfully refreshed from Google Patents.
US2970469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panoramic heterodyne synchronous component analyzer
Assignee: PANORAMIC RADIO PRODUCTS Inc
•
Filing: 1957-03-08
•
Granted: 1961-02-07
•
Expires: 1977-03-08
Abstract
No abstract record available.
Inventors
- 👤 Edward F Feldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:55
CPC Classifications
G; G10; G10L; G10L21/00; G10L21/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |