Patent US2785352A successfully refreshed from Google Patents.
US2785352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical capacitors
Assignee: Sprague Electric Co
•
Filing: 1953-01-27
•
Granted: 1957-03-12
•
Expires: 1973-01-27
Abstract
No abstract record available.
Inventors
- 👤 Paul H Netherwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:10
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G4/232; H01G4/2325; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB563500A
Cited
US2470045A
Cited
US2497376A
Cited
US2548862A
Cited
US2527373A
Cited
US2627645A
Cited
US2651100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |