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US3461432A
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US
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Assignee: Unisys Corp
•
Filing: 1966-12-14
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Granted: 1969-08-12
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Expires: 1986-12-14
Abstract
No abstract record available.
Inventors
- 👤 Irvin L Keiter
- 👤 Leonard H Sichel Jr
- 👤 Edgar O Morgenson Jr
- 👤 Charles R Questa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:00
CPC Classifications
H; H03; H03M; H03M7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2992421A
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US3235664A
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US3274378A
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US3283306A
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US3348205A
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US3241134A
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US3293618A
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US3293639A
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US3268875A
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US3354450A
Cited
US3343140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |