US2888615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-enclosed switchgear
Assignee: Westinghouse Electric Corp
•
Filing: 1955-03-16
•
Granted: 1959-05-26
•
Expires: 1975-03-16
Abstract
No abstract record available.
Inventors
- 👤 Roy S Tusing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:54
CPC Classifications
H; H02; H02B; H02B11/00; H02B11/12; H02B11/127; H02B11/133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1885365A
Cited
US2363364A
Cited
US2538042A
Cited
US2554510A
Cited
US2673260A
Cited
US2600304A
Cited
US2691713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |