US2650758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic skip-tab tabulating mechanism for accounting machines
Assignee: Underwood Corp
•
Filing: 1948-12-30
•
Granted: 1953-09-01
•
Expires: 1968-12-30
Abstract
No abstract record available.
Inventors
- 👤 Hacht William H Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:50
CPC Classifications
G; G06; G06C; G06C23/00; G06C23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1932220A
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US1942216A
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US2084519A
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US2194270A
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US2209240A
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US2226960A
Cited
US2255557A
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US2356429A
Cited
US2318448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |