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Patent US2662979A successfully refreshed from Google Patents.
US2662979A
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Electric pulse signaling system
Assignee: The General Electric Company PLC
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Filing: 1949-02-03
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Granted: 1953-12-15
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Expires: 1969-02-03
Abstract
No abstract record available.
Inventors
- 👤 Farren Leslie Ivan
- 👤 Head Norman Edwin
- 👤 Levy Maurice Moise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:32
CPC Classifications
H; H03; H03K; H03K11/00; H04; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |