US2501322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture-resistant lightning arrester valve block
Assignee: Westinghouse Electric Corp
•
Filing: 1946-11-07
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Granted: 1950-03-21
•
Expires: 1966-11-07
Abstract
No abstract record available.
Inventors
- 👤 John S Ferguson
- 👤 Jr Howard E Dyche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB215728A
Cited
US1948382A
Cited
US2253360A
Cited
US2258219A
Cited
US2374527A
Cited
US2425032A
Cited
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 |