US3532903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state switch
Assignee: Unisys Corp
•
Filing: 1967-09-15
•
Granted: 1970-10-06
•
Expires: 1987-09-15
Abstract
No abstract record available.
Inventors
- 👤 Irving Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:54
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/73; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H03K17/04; H03K17/041; H03K17/0416; H03K17/04166
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2885572A
Cited
US3329838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |