Patent US5871928A successfully refreshed from Google Patents.
US2814760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweep circuits
Assignee: Raytheon Co
•
Filing: 1955-04-14
•
Granted: 1957-11-26
•
Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Harold N Beveridge
- 👤 Richard M Dunham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:09
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/26; H03K4/39; H03K4/43
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2074496A
Cited
US2412485A
Cited
US2594104A
Cited
US2552949A
Cited
US2508879A
Cited
US2584882A
Cited
US2548532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |