Patent US3260994A successfully refreshed from Google Patents.
US3260994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multifrequency pulse transmission system
Assignee: AT&T Inc
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Filing: 1962-12-28
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Granted: 1966-07-12
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Expires: 1982-12-28
Abstract
No abstract record available.
Inventors
- 👤 William W Sturdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:49
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
IN A PULSE COMMUNICATION SYSTEM WHEREIN THE TRANSMISSION OF EACH CHARACTER IS REPRESENTED BY A PULSE FRAME WHICH INCLUDES A PLURALITY OF MARK PULSES INTERLEAVED WITH THE PLURALITY OF SPACE PULSES, MEANS FOR TRANSMITTING THE MARK PULES OF EACH OF SAID FRAMES IN THE FORM OF A SUCCESSION OF OSCILLATORY BURSTS EACH HAVING A DIFFERENT FREQUENCY COMPOSITION IN ACCORDANCE WITH A FIRST PRESELECTED FREQUENCY SEQUENCE, MEANS FOR TRANSMITTING THE SPACE PULSES OF EACH OF SAID FRAME IN THE FORM OF A SUCCESSION OF OSCILLATORY BURSTS EACH HAVING A FREQUENCY COMPOSITION IN ACCORDANCE WITH A SECOND PRESELECTED FREQUENCY SEQUENCE, MEANS FOR RECEIVING SAID FRAMES INCLUDING MEANS FOR STORING ALL OF SAID BURSTS IN EACH SUCCESSIVE ONE OF SAID FIRST FRAMES UPON RECEIPT, MEANS FOR TESTIN THE VALIDITY OF EACH PULSE IN A STORED ONE OF SAID FRAMES ON THE BASIS OF SAID PRESELECTED FREQUENCY, AND MEANS RESPONSIVE TO SAID TESTING MEANS FOR ERASING A STORED FRAME FROM SAID STORING MEANS OPERATIVE UPON THE DETERMINATION OF THE PRESENCE OF A SPURIOUS PULSE IN SAID LAST NAMED FRAME.
Claim 2
Dependent Claim
175 words
IN A PULSE COMMUNICATION SYSTEM WHEREIN THE TRANSMISSION OF EACH CHARACTER IS REPRESENTED BY A PULSE FRAME WHICH INCLUDES A PLURALITY OF MARK PULSES INTERLEAVED WITH THE PLURALITY OF SPACE PULSES, MEANS FOR TRANSMITTING THE MARK PULES OF EACH OF SAID FRAMES IN THE FORM OF A SUCCESSION OF OSCILLATORY BURSTS EACH HAVING A DIFFERENT FREQUENCY COMPOSITION IN ACCORDANCE WITH A FIRST PRESELECTED FREQUENCY SEQUENCE, MEANS FOR TRANSMITTING THE SPACE PULSES OF EACH OF SAID FRAME IN THE FORM OF A SUCCESSION OF OSCILLATORY BURSTS EACH HAVING A FREQUENCY COMPOSITION IN ACCORDANCE WITH A SECOND PRESELECTED FREQUENCY SEQUENCE, MEANS FOR RECEIVING SAID FRAMES INCLUDING MEANS FOR STORING ALL OF SAID BURSTS IN EACH SUCCESSIVE ONE OF SAID FIRST FRAMES UPON RECEIPT, MEANS FOR TESTIN THE VALIDITY OF EACH PULSE IN A STORED ONE OF SAID FRAMES ON THE BASIS OF SAID PRESELECTED FREQUENCY, AND MEANS RESPONSIVE TO SAID TESTING MEANS FOR ERASING A STORED FRAME FROM SAID STORING MEANS OPERATIVE UPON THE DETERMINATION OF THE PRESENCE OF A SPURIOUS PULSE IN SAID LAST NAMED FRAME.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |