Patent US2766318A successfully refreshed from Google Patents.
US2766318A
Expired / Lapsed
US
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Printing telegraph automatic switching system
Assignee: AT&T Inc
•
Filing: 1949-10-01
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Granted: 1956-10-09
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Expires: 1969-10-01
Abstract
No abstract record available.
Inventors
- 👤 Walter M Bacon
- 👤 George J Knandel
- 👤 Joseph A Krecek
- 👤 George A Locke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |