US2649505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse time position switching system
Assignee: International Standard Electric Corp
•
Filing: 1947-12-30
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Granted: 1953-08-18
•
Expires: 1967-12-30
Abstract
No abstract record available.
Inventors
- 👤 Ransom David Hiram
- 👤 Roberts William Leslie
- 👤 Taplin Ronald Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:01
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/52; H04Q3/526; H04J; H04J3/00; H04Q11/00; H04Q11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2199634A
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US2277192A
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US2271000A
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US2387018A
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US2418116A
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US2454815A
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US2388001A
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US2462896A
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US2492136A
Cited
US2492180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |