Patent US2671451A successfully refreshed from Google Patents.
US2583138A
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Assignee: Westinghouse Electric Corp
•
Filing: 1946-12-26
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Granted: 1952-01-22
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Expires: 1966-12-26
Abstract
No abstract record available.
Inventors
- 👤 John M Carter
- 👤 John R Boykin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:26
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/24; H03C3/245; H03J; H03J3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1998119A
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US2182377A
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US2222048A
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US2306555A
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US2298437A
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US2473556A
Cited
US2424246A
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US2461307A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |