US2655605A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating current switching device
Assignee: International Standard Electric Corp
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Filing: 1951-11-15
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Granted: 1953-10-13
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Expires: 1971-11-15
Abstract
No abstract record available.
Inventors
- 👤 Hartley George Clifford
- 👤 Bray Frederick Harry
- 👤 Hough George Hubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:36
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/52; H04Q3/525; H01; H01J; H01J17/00; H03; H03K; H03K17/00; H03K17/51; H03K17/52; H01J2893/00; H01J2893/0064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |