US2738874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record controlled machine
Assignee: International Business Machines Corp
•
Filing: 1949-01-31
•
Granted: 1956-03-20
•
Expires: 1969-01-31
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Wilson
- 👤 Benjamin M Durfee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:39
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/20; H04N21/23; H04N21/231; H04N21/23103; G; G06; G06F; G06F7/00; G06F7/06; G06K; G06K1/00; G06K1/20; G11; G11B; G11B27/00; G11B27/002; H04L; H04L69/00; H04L69/30; H04L69/32; H04L69/322; H04L69/329; G11B2220/00; G11B2220/40; G11B2220/41
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |