US2952799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outdoor metal-clad switchgear
Assignee: Westinghouse Electric Corp
•
Filing: 1957-08-19
•
Granted: 1960-09-13
•
Expires: 1977-08-19
Abstract
No abstract record available.
Inventors
- 👤 Wortman Herman Barr
- 👤 Job T Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:03
CPC Classifications
H; H02; H02B; H02B7/00; H02B7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920683A
Cited
US1986619A
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US2013525A
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US2218554A
Cited
US2288650A
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US2634462A
Cited
US2633610A
Cited
US2501345A
Cited
US2533645A
Cited
US2757418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |