Patent US2566930A successfully refreshed from Google Patents.
US2566930A
Expired / Lapsed
US
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Paper bail mechanism for typewriters
Assignee: International Business Machines Corp
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Filing: 1948-07-23
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Granted: 1951-09-04
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Expires: 1968-07-23
Abstract
No abstract record available.
Inventors
- 👤 Chester W Crumrine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:15
CPC Classifications
B; B41; B41J; B41J13/00; B41J13/10; B41J13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |