Patent US3444979A successfully refreshed from Google Patents.
US3444979A
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US
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Ribbon feeding device for a variable spacing typewriter
Assignee: Olivetti SpA
•
Filing: 1966-06-02
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Granted: 1969-05-20
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Expires: 1986-06-02
Abstract
No abstract record available.
Inventors
- 👤 Bernardino Francisco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:10
CPC Classifications
B; B41; B41J; B41J33/00; B41J33/14; B41J33/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3026987A
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US2972402A
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US3151722A
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US3288262A
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US3346090A
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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) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |