US3534301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensated integrated circuit type narrowband stripline filter
Assignee: AT&T Inc
•
Filing: 1967-06-12
•
Granted: 1970-10-13
•
Expires: 1987-06-12
Abstract
No abstract record available.
Inventors
- 👤 John J Golembeski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:50
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/08; H01P3/085; H01P1/00; H01P1/20; H01P1/201; H01P1/203; H01P1/2039
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2648823A
Cited
US2819452A
Cited
US2964718A
Cited
US2915716A
Cited
US2922968A
Cited
US3142808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |