Patent US2579135A successfully refreshed from Google Patents.
US2579135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical switch
Assignee: Individual
•
Filing: 1948-07-31
•
Granted: 1951-12-18
•
Expires: 1968-07-31
Abstract
No abstract record available.
Inventors
- 👤 John A Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:23
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/12; H01H13/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US734046A
Cited
US1052891A
Cited
US1214920A
Cited
US1748219A
Cited
US1909665A
Cited
US2191588A
Cited
US2233187A
Cited
US2385292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |