US3535620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of and systems for detecting and analyzing whether a generated pulse possesses desired characteristics
Assignee: AT&T Inc
•
Filing: 1967-11-16
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Granted: 1970-10-20
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Expires: 1987-11-16
Abstract
No abstract record available.
Inventors
- 👤 James J Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:39
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/02; G01R29/027; G01R29/0273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3235794A
Cited
US3222595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |