US2530185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device
Assignee: Westinghouse Electric Corp
•
Filing: 1944-11-04
•
Granted: 1950-11-14
•
Expires: 1964-11-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard L Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:22
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587; H01J23/00; H01J23/16; H01J23/18; H01J23/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB445084A
Cited
US2154758A
Cited
US2144222A
Cited
US2115521A
Cited
US2243829A
Cited
US2241976A
Cited
US2408235A
Cited
US2422465A
Cited
US2414084A
Cited
US2408903A
Cited
US2409913A
Cited
US2414085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |