US3504348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data transfer controller
Assignee: Unisys Corp
•
Filing: 1967-07-03
•
Granted: 1970-03-31
•
Expires: 1987-07-03
Abstract
No abstract record available.
Inventors
- 👤 Henry R Hallman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:06
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2905930A
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US2931014A
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US2978678A
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US3228004A
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US3121860A
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US3183489A
Cited
US3229080A
Cited
US3287704A
Cited
US3334181A
Cited
US3340515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |