US3040220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum variable capacitor
Assignee: Jennings Radio Manufacturing Corp
•
Filing: 1957-07-16
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Granted: 1962-06-19
•
Expires: 1977-07-16
Abstract
No abstract record available.
Inventors
- 👤 Roderick W Neibaur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:28
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/04; H01G5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB210577A
Cited
US1844930A
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US1718138A
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US2147425A
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US2339663A
Cited
US2500875A
Cited
US2698405A
Cited
US2889501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |