Patent US2910668A successfully refreshed from Google Patents.
US2910668A
Expired / Lapsed
US
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Information processing system
Assignee: Underwood Corp
•
Filing: 1954-03-03
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Granted: 1959-10-27
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Expires: 1974-03-03
Abstract
No abstract record available.
Inventors
- 👤 Robert F Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:11
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2701095A
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US2658139A
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US2679644A
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US2751432A
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US2708216A
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US2719959A
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US2700149A
Cited
US2817829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |