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US2994064A
Expired / Lapsed
US
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Information transmitting circuits
Assignee: Post Office
•
Filing: 1955-04-11
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Granted: 1961-07-25
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Expires: 1975-04-11
Abstract
No abstract record available.
Inventors
- 👤 Harris Lionel Roy Frank
- 👤 Broadhurst Sidney Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:47
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2853694A
Cited
US2723311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |