US2999140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-magnetic coordinate switch
Assignee: International Standard Electric Corp
•
Filing: 1958-11-12
•
Granted: 1961-09-05
•
Expires: 1978-11-12
Abstract
No abstract record available.
Inventors
- 👤 Dumousseau Claude Rene Jean
- 👤 Touraton Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:15
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/281; H01H67/00; H01H67/22; H01H67/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2187115A
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US2397123A
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US2535400A
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US2630506A
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US2836676A
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US2902558A
Cited
US2821597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |