Patent US2498249A successfully refreshed from Google Patents.
US2498249A
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US
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Adjustable counting relay system
Assignee: Westinghouse Electric Corp
•
Filing: 1941-04-19
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Granted: 1950-02-21
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Expires: 1961-04-19
Abstract
No abstract record available.
Inventors
- 👤 Willard G Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:22
CPC Classifications
B; B23; B23D; B23D36/00; B23D36/0008; B23D36/0033; B23D36/0058; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18216; Y10T74/20; Y10T74/20558; Y10T74/2057; Y10T83/00; Y10T83/465; Y10T83/4757
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1668777A
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US1894815A
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US1946926A
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US1996617A
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US2079974A
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US2023243A
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US2144308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |