US2838602A
Expired / Lapsed
US
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Assignee: International Business Machines Corp
•
Filing: 1953-07-22
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Granted: 1958-06-10
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Expires: 1973-07-22
Abstract
No abstract record available.
Inventors
- 👤 Sprick Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:23
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/1092; G06K11/00; G06K11/02; G06K11/04; G06V; G06V10/00; G06V10/10; G06V10/20; G06V30/00; G06V30/10; G06V30/14; G06V30/146; G06V30/18; G06V30/182
Claims Analysis
Total Claims: 0
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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) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |