US2501345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-clad switchgear
Assignee: Westinghouse Electric Corp
•
Filing: 1947-06-02
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Granted: 1950-03-21
•
Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 John B Macneill
- 👤 Benjamin I Hayford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:20
CPC Classifications
H; H02; H02B; H02B13/00; H02B13/02; H02B13/035; H02B1/00; H02B1/26; H02B1/28; H02B13/055
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |