US2916728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording and reading systems
Assignee: Unisys Corp
•
Filing: 1955-11-18
•
Granted: 1959-12-08
•
Expires: 1975-11-18
Abstract
No abstract record available.
Inventors
- 👤 Paul R Gilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:32
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2359489A
Cited
US2539976A
Cited
US2690913A
Cited
US2713676A
Cited
US2628346A
Cited
US2827622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |