US2816190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarized electromagnetic relay
Assignee: General Telephone Laboratories Inc
•
Filing: 1952-07-17
•
Granted: 1957-12-10
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Expires: 1972-07-17
Abstract
No abstract record available.
Inventors
- 👤 Edward S Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:04
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/22; H01H51/2236; H01H51/2245; H01H51/2254
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US922099A
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US1753689A
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FR728982A
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US2203727A
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US2286848A
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US2580123A
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US2517214A
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US2578032A
Cited
US2623965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |