US2760124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching apparatus and systems
Assignee: Westinghouse Electric Corp
•
Filing: 1952-05-17
•
Granted: 1956-08-21
•
Expires: 1972-05-17
Abstract
No abstract record available.
Inventors
- 👤 William E Glassburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/12; H02J3/16; Y; Y02; Y02E; Y02E40/00; Y02E40/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1286239A
Cited
US1893179A
Cited
US2254039A
Cited
US2333520A
Cited
US2680832A
Cited
US2615962A
Cited
US2697803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |