US2793333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical capacitor
Assignee: SPRAGNE OF WISCONSIN Inc
•
Filing: 1951-07-05
•
Granted: 1957-05-21
•
Expires: 1971-07-05
Abstract
No abstract record available.
Inventors
- 👤 George M Ehlers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:16
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/28; 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)
US2172604A
Cited
US1255597A
Cited
US1479315A
Cited
US1810385A
Cited
US2115642A
Cited
DE613731C
Cited
DE601961C
Cited
US2143369A
Cited
GB482459A
Cited
US2398176A
Cited
US2395442A
Cited
US2441213A
Cited
US2452026A
Cited
GB628233A
Cited
US2601081A
Cited
US2569655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |