US2821908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpreting and printing machine
Assignee: International Business Machines Corp
•
Filing: 1956-01-19
•
Granted: 1958-02-04
•
Expires: 1976-01-19
Abstract
No abstract record available.
Inventors
- 👤 Fred B Porterfield
- 👤 William B Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:26
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/20; B; B41; B41J; B41J3/00; B41J3/407; B41J3/4071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1791451A
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US2005038A
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US1608837A
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US1798328A
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US1726539A
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US1791753A
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US1896538A
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US2695558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |