US2881269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High impedance transistor circuits
Assignee: Individual
•
Filing: 1956-05-07
•
Granted: 1959-04-07
•
Expires: 1976-05-07
Abstract
No abstract record available.
Inventors
- 👤 Hanel Rudolf Albert
- 👤 Rudolf A Stampfl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:17
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |