US2677071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage reference tube
Assignee: RCA Corp
•
Filing: 1948-06-30
•
Granted: 1954-04-27
•
Expires: 1968-06-30
Abstract
No abstract record available.
Inventors
- 👤 Gerald G Carne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:44
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; H01J17/06; H01J17/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1128817A
Cited
US1680367A
Cited
US2017278A
Cited
US2291864A
Cited
US2403745A
Cited
US2467953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |