US2748270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gating system
Assignee: Unisys Corp
•
Filing: 1952-03-31
•
Granted: 1956-05-29
•
Expires: 1972-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jr John Presper Eckert
- 👤 James R Weiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:00
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/13; H03K5/135; H03K17/00; H03K17/51; H03K17/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2563406A
Cited
US2233860A
Cited
US2443195A
Cited
US2562660A
Cited
US2618753A
Cited
US2644887A
Cited
US2625662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |