US2964157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter ribbon regulators
Assignee: Individual
•
Filing: 1958-01-31
•
Granted: 1960-12-13
•
Expires: 1978-01-31
Abstract
No abstract record available.
Inventors
- 👤 John P Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:16
CPC Classifications
B; B41; B41J; B41J31/00; B41J31/14; B41J31/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1262856A
Cited
US1298045A
Cited
US1414865A
Cited
US2098171A
Cited
US2599561A
Cited
US2725915A
Cited
US2725849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |