Patent US2771293A successfully refreshed from Google Patents.
US2771293A
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Record card controlled statistical machines
Assignee: Powers Samas Accounting Machines Ltd
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Filing: 1953-08-26
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Granted: 1956-11-20
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Expires: 1973-08-26
Abstract
No abstract record available.
Inventors
- 👤 Guttridge Eric John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:12
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/08; G06K13/10
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) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |