Patent US2080799A successfully refreshed from Google Patents.
Patent US2168193A successfully refreshed from Google Patents.
US2168193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiband receiver
Assignee: BAE Systems Aerospace Inc
•
Filing: 1937-05-04
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Granted: 1939-08-01
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Expires: 1957-05-04
Abstract
No abstract record available.
Inventors
- 👤 Nelson P Case
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:50
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/22; A; A63; A63F; A63F7/00; A63F7/06; A63F7/068; H03F; H03F3/00; H03F3/46; H03F3/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-07-31 | 1943-01-30 | 1943-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-07-31 | 1947-01-30 | 1947-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-07-31 | 1951-01-30 | 1951-08-01 | $7700.00 | Window Closed / Lapsed |