US2718569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breakers
Assignee: Individual
•
Filing: 1951-08-22
•
Granted: 1955-09-20
•
Expires: 1971-08-22
Abstract
No abstract record available.
Inventors
- 👤 Gunnard Z Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:13
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H01H71/142
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1628802A
Cited
CH17102A
Cited
GB229564A
Cited
US1655847A
Cited
US1655852A
Cited
US1725255A
Cited
US1976953A
Cited
US2269162A
Cited
US2302250A
Cited
US2399406A
Cited
FR904407A
Cited
CH264749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |