US2983875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emitter-follower coupled multisection filter circuit
Assignee: Lanteris Space LLC
•
Filing: 1958-04-18
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Granted: 1961-05-09
•
Expires: 1978-04-18
Abstract
No abstract record available.
Inventors
- 👤 Zechter Sol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:30
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2121150A
Cited
US2122193A
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US2510868A
Cited
US2549761A
Cited
US2671856A
Cited
US2627931A
Cited
US2761921A
Cited
US2864904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |