US2569799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: International Business Machines Corp
•
Filing: 1946-05-15
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Granted: 1951-10-02
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Expires: 1966-05-15
Abstract
No abstract record available.
Inventors
- 👤 Fred M Carroll
- 👤 Arthur F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:02
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/08; G06K13/12; B; B41; B41L; B41L45/00; G06K13/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1667881A
Cited
US1710691A
Cited
US1633936A
Cited
US1935442A
Cited
US2359670A
Cited
US2251221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |