US3525814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Originating register control switching system with optimum-routing network status programming
Assignee: Individual
•
Filing: 1965-12-27
•
Granted: 1970-08-25
•
Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 John Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:26
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04Q3/545
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2421919A
Cited
US2557388A
Cited
US3111559A
Cited
US3231676A
Cited
US3155775A
Cited
US3309467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |