Patent US3529256A successfully refreshed from Google Patents.
US3529256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated band-pass filter
Assignee: Texas Instruments Inc
•
Filing: 1968-10-07
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Granted: 1970-09-15
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Expires: 1988-10-07
Abstract
No abstract record available.
Inventors
- 👤 James S Crabbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:36
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/04; H03H11/12; H03H11/1213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3233196A
Cited
US3383612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |