US2701289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ballast tube
Assignee: RCA Corp
•
Filing: 1951-04-28
•
Granted: 1955-02-01
•
Expires: 1971-04-28
Abstract
No abstract record available.
Inventors
- 👤 Kurshan Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:14
CPC Classifications
H; H01; H01C; H01C3/00; H01C3/04; H05; H05H; H05H1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1547701A
Cited
DE450040C
Cited
US2455394A
Cited
US2367570A
Cited
US2564416A
Cited
US2629038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |