US3278684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision timing of pulse signals
Assignee: AT&T Inc
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Filing: 1962-11-28
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Granted: 1966-10-11
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Expires: 1982-11-28
Abstract
No abstract record available.
Inventors
- 👤 John W Geraghty
- 👤 John R Shine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:46
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/13
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
APPARATUS FOR DETERMINING THAT A SIGNAL EFFECTS A TRANSITION FROM ONE LEVEL TO ANOTHER WITHIN A FIRST SET OF PRESCRIBED TIME LIMITS AND A RETURN TRANSITION WITHIN A SECOND SET OF PRESCRIBED TIME LIMITS WHICH COMPRISES: A FIRST TIMING DEVICE FOR ESTABLISHING THE MINIMUM INTERVALS ASSOCIATED WITH BOTH SETS OF PRESCRIBED TIME LIMITS, A SECOND TIMING DEVICE, RESPONSIVE TO THE FIRST, FOR ESTABLISHING THE MAXIMUM INTERVALS ASSOCIATED WITH SAID SETS, MEANS FOR EXTENDING SAID INTERVALS FOR THE FAILURES OF THE SIGNAL TO SATISFY SAID LILMITS DURING THE COURSE OF TIMING, THEREBY TO ALLOW THE REGISTRATION OF SAID FAILURES AFTER THE NORMINAL TERMINATION OF SAID INTERVALS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |