US3421022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signalling circuit arrangement
Assignee: Ind Bull General Electric SA S
•
Filing: 1965-09-17
•
Granted: 1969-01-07
•
Expires: 1985-09-17
Abstract
No abstract record available.
Inventors
- 👤 Jean-Jacques Laupretre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:08
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/027; H03K3/037; H03K3/0377; H03K17/00; H03K17/30; H03K3/313; H03K3/315; H03K5/00; H03K5/01; H03K5/04; H03K5/05
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3292003A
Cited
US3253165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |