US2579723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic device
Assignee: RTX Corp
•
Filing: 1947-10-28
•
Granted: 1951-12-25
•
Expires: 1967-10-28
Abstract
No abstract record available.
Inventors
- 👤 Stanley G Best
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:33
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607; H01F7/1615; H01F7/121; H01F7/122
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US607589A
Cited
US1025559A
Cited
US1006504A
Cited
FR398331A
Cited
US1271108A
Cited
US1382412A
Cited
US1634292A
Cited
US2159610A
Cited
US2167078A
Cited
US2423190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |