US2950472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Unisys Corp
•
Filing: 1956-10-18
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Granted: 1960-08-23
•
Expires: 1976-10-18
Abstract
No abstract record available.
Inventors
- 👤 Lothair H Rowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:13
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/66; H03M1/668
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2803815A
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US2122748A
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US2775754A
Cited
US2731631A
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US2853699A
Cited
US2860292A
Cited
US2820937A
Cited
US2814006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |