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Patent US2473850A successfully refreshed from Google Patents.
US2473850A
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Lightning arrester
Assignee: Westinghouse Electric Corp
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Filing: 1945-07-27
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Granted: 1949-06-21
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Expires: 1965-07-27
Abstract
No abstract record available.
Inventors
- 👤 Edward F W Beck
- 👤 John S Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:26
CPC Classifications
H; H01; H01T; H01T4/00; H01T4/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20465E
Cited
US1510731A
Cited
GB516482A
Cited
US2297323A
Cited
US2330918A
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US2386720A
Cited
US2415945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |