US3428160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter line space mechanism
Assignee: SCM Corp
•
Filing: 1965-11-26
•
Granted: 1969-02-18
•
Expires: 1985-11-26
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Barkdoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:10
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/76; B41J19/78; B41J19/80; B41J19/82; B41J19/84; B41J19/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2153182A
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US2905297A
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US2791311A
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US2902133A
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US2973078A
Cited
US3017980A
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US3031057A
Cited
US3212616A
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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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |