US2969525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locating information
Assignee: Unisys Corp
•
Filing: 1954-05-20
•
Granted: 1961-01-24
•
Expires: 1974-05-20
Abstract
No abstract record available.
Inventors
- 👤 John L Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:29
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/102; G11B27/19; G11B27/28; G11B27/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2124906A
Cited
US2549071A
Cited
US2614169A
Cited
US2675427A
Cited
US2718356A
Cited
US2721990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |