US2684718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card punching machine
Assignee: International Business Machines Corp
•
Filing: 1950-06-15
•
Granted: 1954-07-27
•
Expires: 1970-06-15
Abstract
No abstract record available.
Inventors
- 👤 Hans P Luhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:47
CPC Classifications
G; G06; G06K; G06K5/00; G06K5/02; B; B26; B26F; B26F1/00; B26F1/02; B26F1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2581184A
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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) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |