US2424329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc prevention for control systems
Assignee: Westinghouse Electric Corp
•
Filing: 1943-07-29
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Granted: 1947-07-22
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Expires: 1963-07-29
Abstract
No abstract record available.
Inventors
- 👤 Gaylord W Penney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:12
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/54; H01H9/541; H01H9/542
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1193660A
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US978999A
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US1656837A
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US1708384A
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US1902958A
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US1982875A
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GB511702A
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US2226203A
Cited
US2329036A
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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) | 1950-07-21 | 1951-01-20 | 1951-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-21 | 1955-01-20 | 1955-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-21 | 1959-01-20 | 1959-07-22 | $7700.00 | Window Closed / Lapsed |