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Patent US3468246A successfully refreshed from Google Patents.
US3468246A
Expired / Lapsed
US
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Print hammers with electromagnetic actuating means
Assignee: International Computers and Tabulators Ltd
•
Filing: 1967-03-09
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Granted: 1969-09-23
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Expires: 1987-03-09
Abstract
No abstract record available.
Inventors
- 👤 Ronald Henry Lee
- 👤 Albert John Keen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:40
CPC Classifications
B; B41; B41J; B41J9/00; B41J9/02; B41J9/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2787210A
Cited
US2940385A
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US3183830A
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US3110250A
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US3306191A
Cited
US3177803A
Cited
US3266418A
Cited
US3314359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |