US2740926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum variable condenser
Assignee: Jennings Radio Manufacturing Corp
•
Filing: 1951-11-20
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Granted: 1956-04-03
•
Expires: 1971-11-20
Abstract
No abstract record available.
Inventors
- 👤 Jennings Jo Emmett
- 👤 Lewis B Steward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:15
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/02
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) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |