US2958727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Checking system for record data transmission
Assignee: International Business Machines Corp
•
Filing: 1955-12-14
•
Granted: 1960-11-01
•
Expires: 1975-12-14
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Barbeau
- 👤 John R Natvig
- 👤 John B Norris
- 👤 Donald K Close
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:08
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/004; G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F3/00; G06F3/06; G06K; G06K5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2242196A
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US2622148A
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US2688656A
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US2613267A
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US2653996A
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US2596199A
Cited
US2689950A
Cited
US2731621A
Cited
US2674727A
Cited
US2713084A
Cited
US2700756A
Cited
US2714201A
Cited
US2774056A
Cited
US2785388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |