Patent US3446989A successfully refreshed from Google Patents.
US3446989A
Expired / Lapsed
US
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Multiple level logic circuitry
Assignee: Motorola Solutions Inc
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Filing: 1966-08-15
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Granted: 1969-05-27
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Expires: 1986-08-15
Abstract
No abstract record available.
Inventors
- 👤 Frihoff Grant Allen
- 👤 Walter C Seelbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:20
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H03K19/086; H03K19/0866; H03K3/00; H03K3/02; H03K3/027; H03K3/037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |