US2616547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible ribbon feeding mechanism for typewriting machines
Assignee: International Business Machines Corp
•
Filing: 1947-06-21
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Granted: 1952-11-04
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Expires: 1967-06-21
Abstract
No abstract record available.
Inventors
- 👤 Ronald D Dodge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:04
CPC Classifications
B; B41; B41J; B41J35/00; B41J35/04; B41J35/10; B41J33/00; B41J33/14; B41J33/40; B41J33/44; B41J33/51; B41J33/516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1089042A
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US1196622A
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US1602757A
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US1800854A
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US1820903A
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US1922991A
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US2152848A
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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) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |