US3535646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low pass filter circuit
Assignee: United States Atomic Energy Commission
•
Filing: 1968-02-28
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Granted: 1970-10-20
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Expires: 1988-02-28
Abstract
No abstract record available.
Inventors
- 👤 Truman H Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:07
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/38; H03F3/40; G; G06; G06G; G06G7/00; G06G7/48; G06G7/54; H03H; H03H19/00; H03H19/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2872582A
Cited
US3041479A
Cited
US3192401A
Cited
US3387224A
Cited
US3435256A
Cited
US3423683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |