Patent US3158723A successfully refreshed from Google Patents.
US3158723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc-extinguishing means for power switches having stationary and movable contact pieces
Assignee: Maschinenfabrik Oerlikon AG
•
Filing: 1961-03-03
•
Granted: 1964-11-24
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
- 👤 Buechner Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:08
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/88; H01H33/90; H01H33/92; H01H33/02; H01H33/04; H01H33/12; H01H33/72; H01H33/75
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2111416A
Cited
US2304529A
Cited
US2365132A
Cited
US2599848A
Cited
CH267793A
Cited
US2551772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |