Patent US2888652A successfully refreshed from Google Patents.
US2888652A
Expired / Lapsed
US
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Electrical filter
Assignee: Motorola Solutions Inc
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Filing: 1954-06-15
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Granted: 1959-05-26
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Expires: 1974-06-15
Abstract
No abstract record available.
Inventors
- 👤 Niederman Bernard
- 👤 Leonard G Chase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:35
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/17; H03H7/1741; H03H7/1775; H03H1/00; H03H7/0115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1931043A
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US2136609A
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US2391038A
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US2455875A
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US2552999A
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US2630560A
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US2738466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |