US2752523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge apparatus
Assignee: International Standard Electric Corp
•
Filing: 1952-04-08
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Granted: 1956-06-26
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Expires: 1972-04-08
Abstract
No abstract record available.
Inventors
- 👤 Goodall Marcus Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:58
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J23/00; H01J23/02; H01J23/06; H01J23/075; H01J23/16; H01J23/24; H01J23/26; H01J25/34; H01J25/36; H01J25/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2295315A
Cited
US2241976A
Cited
US2329118A
Cited
US2424965A
Cited
US2579654A
Cited
US2610308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |