US3526309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink transfer roller with ink supply interrupter for a type wheel
Assignee: Singer Co
•
Filing: 1967-06-30
•
Granted: 1970-09-01
•
Expires: 1987-06-30
Abstract
No abstract record available.
Inventors
- 👤 Andre F Marion
- 👤 Leland D Chamness
- 👤 Kenneth H Steward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:58
CPC Classifications
B; B41; B41J; B41J27/00; B41J27/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1178215A
Cited
US1330787A
Cited
US2823605A
Cited
US2773446A
Cited
US2869454A
Cited
US3274932A
Cited
US3202095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |