Patent US3490572A successfully refreshed from Google Patents.
US3490572A
Expired / Lapsed
US
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Print head carrier drive structure employing same clutch for carrier return and backspace
Assignee: Singer Co
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Filing: 1967-10-02
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Granted: 1970-01-20
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Expires: 1987-10-02
Abstract
No abstract record available.
Inventors
- 👤 Henry E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:33
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/18; B41J19/34; B41J19/36; B41J19/60; B41J19/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126998A
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US2093545A
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US2393441A
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US2701045A
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US2879876A
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US2902133A
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US2909935A
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US3276561A
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US3366215A
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US3353646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |