US2579591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay system
Assignee: Westinghouse Electric Corp
•
Filing: 1947-04-19
•
Granted: 1951-12-25
•
Expires: 1967-04-19
Abstract
No abstract record available.
Inventors
- 👤 Gordon S Ley
- 👤 Coleman J Miller
- 👤 Jr Albert A Nims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:13
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/185; H04B7/18502; H04B7/18504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1624966A
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US1894019A
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GB358972A
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US2127572A
Cited
US2165690A
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US2155821A
Cited
US2198113A
Cited
US2248215A
Cited
US2421017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |