Patent US2798554A successfully refreshed from Google Patents.
US2798554A
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Data transfer apparatus
Assignee: International Business Machines Corp
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Filing: 1955-12-30
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Granted: 1957-07-09
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Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Charles B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:25
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/08; Y; Y10; Y10S; Y10S116/00; Y10S116/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |