US1563833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-tension air-break switch
Assignee: ELECTRICAL ENGINEER S EQUIPMEN
•
Filing: 1919-12-05
•
Granted: 1925-12-01
•
Expires: 1939-12-05
Abstract
No abstract record available.
Inventors
- 👤 Christensen Christen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:17
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/16; H01H33/161
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1928-11-30 | 1929-06-01 | 1929-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-11-30 | 1933-06-01 | 1933-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-11-30 | 1937-06-01 | 1937-12-01 | $7700.00 | Window Closed / Lapsed |