US2513933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold cathode magnetron
Assignee: General Electric Co
•
Filing: 1946-03-28
•
Granted: 1950-07-04
•
Expires: 1966-03-28
Abstract
No abstract record available.
Inventors
- 👤 Anatole M Gurewitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:06
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/30; H01J1/304; H01J23/00; H01J23/02; H01J23/04; H01J23/05; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1309704A
Cited
US1279850A
Cited
US1230004A
Cited
US1577846A
Cited
US1559714A
Cited
US1565659A
Cited
US1661579A
Cited
US1705377A
Cited
US1863702A
Cited
US1930088A
Cited
US1984877A
Cited
US1986894A
Cited
US1965589A
Cited
US2163157A
Cited
US2293468A
Cited
US2409716A
Cited
US2406276A
Cited
US2456896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |