US3238305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time division multiplex system including circuits for transmitting signals in different band widths
Assignee: North Electric Co
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Filing: 1961-05-18
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Granted: 1966-03-01
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Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Bergmann Anders Karlby
- 👤 Jacobaeus Anton Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:57
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04J; H04J3/00; H04J3/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
IN A COMMUNICATION SYSTEM HAVING A FIRST GROUP OF TRANSMISSION PATHS FOR TRANSMITTING SIGNALS WITHIN A FIRST PREDETERMINED BANDWIDTH, AND A TIME DIVISION SWITCHING NETWORK INCLUDING MEANS FOR ESTABLISHING CONNECTIONS OVER SAID TRANSMISSION PATHS, THE PATHS IN DIFFERENT CONNECTIONS BEING ASSIGNED DIFFERENT TIME SLOTS OF A REPETITIVE CYCLE FOR TRANSMISSION PURPOSES, THE IMPROVEMENT WHICH COMPRISES: A SECOND GROUP OF TRANSMISSION PATHS, EACH PATH OF SAID SECOND GROUP INCLUDING INPUT MEANS FOR RECEIVING SIGNALS HAVING A BANDWIDTH WHICH IS WIDER THAN SAID FIRST BANDWIDTH, A PLURALITY OF SAMPLING MEANS OPERATIVE TO SAMPLE SAID RECEIVED SIGNALS AT A PLURALITY OF DISTINCT EQUALLY SPACED TIME SLOTS OF EACH CYCLE, INCLUDING A PLURALITY OF
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |