US2448842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record-controlled printing apparatus
Assignee: International Business Machines Corp
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Filing: 1945-06-09
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Granted: 1948-09-07
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Expires: 1965-06-09
Abstract
No abstract record available.
Inventors
- 👤 Henry L Tholstrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
H; H04; H04L; H04L17/00; H04L17/16; H04L17/22; B; B41; B41J; B41J5/00; B41J5/30; B41J5/31; B41J5/36; B41J5/38
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) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |