US2764680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube limiter circuit
Assignee: Individual
•
Filing: 1946-01-10
•
Granted: 1956-09-25
•
Expires: 1966-01-10
Abstract
No abstract record available.
Inventors
- 👤 Robert M Walker
- 👤 Frederic N Barry
- 👤 Walters E Hogue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:43
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/285; G01S7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1711658A
Cited
US1705993A
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US2066284A
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US2248563A
Cited
US2144304A
Cited
US2300189A
Cited
US2406882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |