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Patent US2940664A successfully refreshed from Google Patents.
US2940664A
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Ten-key setting mechanism
Assignee: HAMANN RECHENMASCHINEN
•
Filing: 1953-07-07
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Granted: 1960-06-14
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Expires: 1973-07-07
Abstract
No abstract record available.
Inventors
- 👤 Hornauer Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:59
CPC Classifications
G; G06; G06C; G06C7/00; G06C7/02; G06C7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2297243A
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US2297383A
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US1253310A
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US1957617A
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US1812020A
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US2303692A
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US2538988A
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US2708550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |