US2425833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron optical instrument
Assignee: RCA Corp
•
Filing: 1944-05-20
•
Granted: 1947-08-19
•
Expires: 1964-05-20
Abstract
No abstract record available.
Inventors
- 👤 Frank E Runge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:02
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/22; H01J37/224
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2003387A
Cited
US2264209A
Cited
US2200095A
Cited
US2272843A
Cited
US2292279A
Cited
US2360677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-18 | 1951-02-17 | 1951-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-18 | 1955-02-17 | 1955-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-18 | 1959-02-17 | 1959-08-19 | $7700.00 | Window Closed / Lapsed |