US3424899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal time compression system
Assignee: AT&T Inc
•
Filing: 1965-08-11
•
Granted: 1969-01-28
•
Expires: 1985-08-11
Abstract
No abstract record available.
Inventors
- 👤 William O Dunnican
- 👤 Richard W Larisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:28
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1928; G10; G10L; G10L21/00; G10L21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A UNIFIED SIGNAL TIME COMPRESSOR COMPRISING: A FIRST INFORMATION CHANNEL INCLUDING A DELAY MEDIUM, A SECOND INFORMATION CHANNEL INCLUDING SAID DELAY MEDIUM MEANS FOR CIRCULATING A TIME COMPRESSED REPLICA OF AN APPLIED SIGNAL IN SAID FIRST INFORMATION CHANNEL, MEANS FOR PERIODICALLY REPRODUCING SAID SIGNAL REPLICA IN SAID SECOND INFORMATION CHANNEL, MEANS FOR SELECTIVELY ALTERING THE DELAY OF SAID SECOND INFORMATION CHANNEL, MEANS FOR COMBINING SAID SIGNAL REPLICA OF SAID FIRST CHANNEL WITH THE DELAYED SIGNAL REPLICA OF SAID SECOND CHANNEL, AND MEANS FOR RECIRCULATING SAID COMBINED SIGNAL REPLICAS IN SAID DELAY MEDIUM.
Claim 2
Dependent Claim
92 words
A UNIFIED SIGNAL TIME COMPRESSOR COMPRISING: A FIRST INFORMATION CHANNEL INCLUDING A DELAY MEDIUM, A SECOND INFORMATION CHANNEL INCLUDING SAID DELAY MEDIUM MEANS FOR CIRCULATING A TIME COMPRESSED REPLICA OF AN APPLIED SIGNAL IN SAID FIRST INFORMATION CHANNEL, MEANS FOR PERIODICALLY REPRODUCING SAID SIGNAL REPLICA IN SAID SECOND INFORMATION CHANNEL, MEANS FOR SELECTIVELY ALTERING THE DELAY OF SAID SECOND INFORMATION CHANNEL, MEANS FOR COMBINING SAID SIGNAL REPLICA OF SAID FIRST CHANNEL WITH THE DELAYED SIGNAL REPLICA OF SAID SECOND CHANNEL, AND MEANS FOR RECIRCULATING SAID COMBINED SIGNAL REPLICAS IN SAID DELAY MEDIUM.
References Cited (Backward Citations)
US2958039A
Cited
US3144638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |