Patent US2564455A successfully refreshed from Google Patents.
US2564455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record changer
Assignee: Raytheon Co
•
Filing: 1945-07-30
•
Granted: 1951-08-14
•
Expires: 1965-07-30
Abstract
No abstract record available.
Inventors
- 👤 Sven A Stolberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:45
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/08; G11B17/00; G11B17/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2371222A
Cited
US1938810A
Cited
US2313193A
Cited
US2371362A
Cited
US2295092A
Cited
US2330293A
Cited
US2331383A
Cited
US2328641A
Cited
US2339981A
Cited
US2287098A
Cited
US2490678A
Cited
US2395026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |