US2968752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple capacitor
Assignee: Sprague Electric Co
•
Filing: 1957-01-24
•
Granted: 1961-01-17
•
Expires: 1977-01-24
Abstract
No abstract record available.
Inventors
- 👤 Harry W Rubinstein
- 👤 Sidney B Williams
- 👤 John E Dornfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:52
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/38; H01G4/385
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |