US2886802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing pulse generator circuit for magnetic drum
Assignee: AT&T Inc
•
Filing: 1955-12-20
•
Granted: 1959-05-12
•
Expires: 1975-12-20
Abstract
No abstract record available.
Inventors
- 👤 Harley A Henning
- 👤 Orlando J Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:01
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2185300A
Cited
US2370166A
Cited
US2540654A
Cited
US2609143A
Cited
US2700148A
Cited
US2797402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |