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US2483400A
Expired / Lapsed
US
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Electronic switch
Assignee: International Standard Electric Corp
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Filing: 1947-05-13
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Granted: 1949-10-04
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Expires: 1967-05-13
Abstract
No abstract record available.
Inventors
- 👤 Trevor H Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:42
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/52; H04Q3/525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2339684A
Cited
US2042869A
Cited
US2122102A
Cited
GB485702A
Cited
US2224677A
Cited
US2315705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |