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US2456771A
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Electromechanical mechanism for actuating calculating machines
Assignee: A GIFFORD AGNEW
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Filing: 1947-06-14
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Granted: 1948-12-21
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Expires: 1967-06-14
Abstract
No abstract record available.
Inventors
- 👤 Simone Michele Guglielmo De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:17
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1976617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |