US3456085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone repertory dialer
Assignee: AT&T Inc
•
Filing: 1965-07-14
•
Granted: 1969-07-15
•
Expires: 1985-07-14
Abstract
No abstract record available.
Inventors
- 👤 Donald D Huizinga
- 👤 Terry B Prince
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:28
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/274; H04M1/276
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2760005A
Cited
US3040133A
Cited
US3234336A
Cited
US3243517A
Cited
US3280269A
Cited
US3385934A
Cited
US3387098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |