US3493820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airgap isolated semiconductor device
Assignee: Raytheon Co
•
Filing: 1966-12-01
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Granted: 1970-02-03
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Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Warren C Rosvold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:00
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/01; H10P; H10P90/00; H10P90/19; H10P90/1904; H10P90/1906; H10W; H10W10/00; H10W10/01; H10W10/061; H10W10/10; H10W10/181; H10W10/021; H10W10/20; Y; Y10; Y10S; Y10S148/00; Y10S148/051; Y10S148/085; Y10S148/115
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) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |