US3384724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker with liquid arc quenching
Assignee: Individual
•
Filing: 1965-03-23
•
Granted: 1968-05-21
•
Expires: 1985-03-23
Abstract
No abstract record available.
Inventors
- 👤 Marx Erwin Otto
- 👤 Grosskope Rudolf Erich
- 👤 Kruckewitt Wilfried
- 👤 Ann Holger
- 👤 Erk Adil
- 👤 Schmitz Ludwig
- 👤 Mollenhoff Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:21
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/06; H01H1/00; H01H1/12; H01H33/08; H01H33/70; H01H33/72; H01H33/75; H01H33/88; H01H33/90; H01H33/91; H01H33/92; H01H39/00
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |