US2994853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information record reading system
Assignee: International Business Machines Corp
•
Filing: 1958-07-07
•
Granted: 1961-08-01
•
Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Morton M Astrahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:54
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2730699A
Cited
US2780670A
Cited
US2700149A
Cited
US2729809A
Cited
US2700155A
Cited
US2764463A
Cited
US2804605A
Cited
US2864078A
Cited
US2851676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |