US2697803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay system
Assignee: Weston Electric Instrument Corp
•
Filing: 1951-08-21
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Granted: 1954-12-21
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Expires: 1971-08-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward M Eadie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:49
CPC Classifications
H; H01; H01H; H01H53/00; H01H53/01; H01H53/015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1941920A
Cited
US2068621A
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US2184701A
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US2307567A
Cited
US2386009A
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US2474843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |