Patent US2873669A successfully refreshed from Google Patents.
US2873669A
Expired / Lapsed
US
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Tabulating machine for billing
Assignee: Unisys Corp
•
Filing: 1954-08-24
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Granted: 1959-02-17
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Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 John J Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:47
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2501447A
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US823219A
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US1455555A
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US1700050A
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US1701307A
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US1872130A
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US1957193A
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US2153144A
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US2507117A
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US2421060A
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US2468341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |