US2909698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube
Assignee: RCA Corp
•
Filing: 1955-09-19
•
Granted: 1959-10-20
•
Expires: 1975-09-19
Abstract
No abstract record available.
Inventors
- 👤 Lloyd P Garner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:46
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; C04B2235/00; C04B2235/60; C04B2235/604; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/124; C04B2237/125; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/40; C04B2237/405; C04B2237/406; C04B2237/50; C04B2237/59; C04B2237/592; C04B2237/60; C04B2237/64; C04B2237/72; C04B2237/76; C04B2237/765
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |