US2585044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gain control apparatus
Assignee: Farnsworth Research Corp
•
Filing: 1945-02-05
•
Granted: 1952-02-12
•
Expires: 1965-02-05
Abstract
No abstract record available.
Inventors
- 👤 Robert W Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:33
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/30; H04; H04N; H04N23/00; H04N23/70; H04N23/76
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |