US2597383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube screen treatment
Assignee: International Business Machines Corp
•
Filing: 1951-06-19
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Granted: 1952-05-20
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Expires: 1971-06-19
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:14
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/23; H; H01; H01J; H01J29/00; H01J29/02; H01J29/021; H01J29/10; H01J29/18; H01J29/182; H01J9/00; H01J9/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2487641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |