US3051855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-correcting ring counter
Assignee: AT&T Inc
•
Filing: 1959-09-23
•
Granted: 1962-08-28
•
Expires: 1979-09-23
Abstract
No abstract record available.
Inventors
- 👤 Bock W Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:16
CPC Classifications
H; H03; H03K; H03K21/00; H03K21/40; H03K17/00; H03K17/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2521774A
Cited
US2551119A
Cited
US2749437A
Cited
US2888556A
Cited
FR1182251A
Cited
US2971157A
Cited
US2909678A
Cited
US2924788A
Cited
US2897363A
Cited
US2931922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |