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Patent US3409882A successfully refreshed from Google Patents.
US3409882A
Expired / Lapsed
US
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Digital concept coordination information retrieval system
Assignee: International Business Machines Corp
•
Filing: 1965-12-29
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Granted: 1968-11-05
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Expires: 1985-12-29
Abstract
No abstract record available.
Inventors
- 👤 James R Sweet
- 👤 Louis D Stevens
- 👤 Jack O Hildebrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:34
CPC Classifications
G; G06; G06F; G06F16/00; G06F16/90; G06F16/901; G06F16/9017; Y; Y10; Y10S; Y10S707/00; Y10S707/99931
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3231869A
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US3258754A
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US3251046A
Cited
US3219999A
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US3293619A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |