Patent US2472605A successfully refreshed from Google Patents.
US3268665A
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Automatic calibration apparatus for time sharing data transmission systems
Assignee: Boeing Co
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Filing: 1963-03-04
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Granted: 1966-08-23
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Glen E Miller
- 👤 Vernon A Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:49
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/06; H04L25/061
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
IN A TIME SHARING MULTIPLEXING SYSTEM HAVING A PLURALITY OF DATA TRANSMISSION CHANNELS A FIRST OF WHICH CARRIES A.C. DATA SIGNALS WITHOUT D.C. DATA SIGNALS AND A SECOND OF WHICH CARRIES SIGNALS INCLUDING D.C. DATA SIGNAL COMPONENTS, THE METHOD OF CALIBRATING THE DATA SIGNALS IN THE SECOND CHANNEL, AFTER RECEPTION, IN RELATION TO THE D.C. LEVEL OF SUCH SIGNALS BEFORE TRANSMISSION, SAID METHOD COMPRISING THE STEPS OF MOMENTARILY TRANSMITTING AND RECEIVING PERIODICALLY OVER THE FIRST CHANNEL A D.C.
References Cited (Backward Citations)
US2753547A
Cited
US3060268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |