US2721990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for locating information in a magnetic tape
Assignee: General Dynamics Corp
•
Filing: 1952-10-17
•
Granted: 1955-10-25
•
Expires: 1972-10-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph T Mcnaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:52
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/0601; G06F7/00; G06F7/02; G06F3/0668; G06F3/0671; G06F3/0673; G06F3/0682
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2246449A
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US2617704A
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US2611813A
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US2628689A
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US2594731A
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US2609439A
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US2614169A
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US2628346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |