US2148588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube
Assignee: RCA Corp
•
Filing: 1932-07-16
•
Granted: 1939-02-28
•
Expires: 1952-07-16
Abstract
No abstract record available.
Inventors
- 👤 Harold A Snow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:56
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/82; H01J29/48; H01J9/00; H01J9/20; H01J9/22; H01J9/221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-02-27 | 1942-08-29 | 1943-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-27 | 1946-08-29 | 1947-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-27 | 1950-08-29 | 1951-02-28 | $7700.00 | Window Closed / Lapsed |