Patent US3478858A successfully refreshed from Google Patents.
US3478858A
Expired / Lapsed
US
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Inking mechanism for calculators and like machines
Assignee: Unisys Corp
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Filing: 1967-02-28
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Granted: 1969-11-18
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Expires: 1987-02-28
Abstract
No abstract record available.
Inventors
- 👤 Tibor Arvai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:26
CPC Classifications
B; B41; B41J; B41J27/00; B41J27/02; B41J15/00; B41J15/04; B41J15/06; B41J31/00; B41J31/14; B41J31/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US525916A
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US545169A
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US790272A
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US714132A
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US1417556A
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US1576997A
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US1815026A
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US2035071A
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US2530697A
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US2819783A
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US3146708A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |