US3470341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum switch with liquid filled bellows operation
Assignee: English Electric Co Ltd
•
Filing: 1966-09-30
•
Granted: 1969-09-30
•
Expires: 1986-09-30
Abstract
No abstract record available.
Inventors
- 👤 Stanley Beddoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:06
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/666; H01H33/02; H01H33/28; H01H33/30; H01H33/34; H01H1/00; H01H1/58; H01H1/5833; H01H33/04; H01H33/14; H01H33/662; H01H33/66238
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |