US2884545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor protection circuit
Assignee: General Precision Laboratory Inc
•
Filing: 1954-03-17
•
Granted: 1959-04-28
•
Expires: 1974-03-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Gladden B Houck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:33
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/52; H03K; H03K17/00; H03K17/08; H03K17/081; H03K17/0814; H03K17/08146
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2476323A
Cited
US2622211A
Cited
US2629833A
Cited
US2691073A
Cited
US2655609A
Cited
US2665845A
Cited
US2759179A
Cited
US2747111A
Cited
US2705287A
Cited
US2724061A
Cited
US2722649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |