US3541518A
Expired / Lapsed
US
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Data handling apparatus employing an active storage device with plural selective read and write paths
Assignee: International Business Machines Corp
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Filing: 1967-09-27
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Granted: 1970-11-17
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Expires: 1987-09-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Bell
- 👤 Raymond J Klotz
- 👤 Donald E Wallis
- 👤 Karl K Womack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:23
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/14; G06F13/20; G06F13/32; G06F13/34; G06F12/00; G06F12/02; G06F12/04; G06F13/10; G06F15/00; G06F15/76; G06F15/78; G06F3/00; G06F9/00; G06F9/06; G06F9/30; G06F9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |