Patent US2753789A successfully refreshed from Google Patents.
US2753789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record card punching mechanism
Assignee: International Business Machines Corp
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Filing: 1952-12-10
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Granted: 1956-07-10
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Expires: 1972-12-10
Abstract
No abstract record available.
Inventors
- 👤 Elliott W Gardinor
- 👤 Arnold B Crowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:25
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1862032A
Cited
US2003636A
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US1909548A
Cited
US2168763A
Cited
US2265222A
Cited
US2359680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |