Patent US2759155A successfully refreshed from Google Patents.
US2759155A
Expired / Lapsed
US
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Electrical capacitor and filter unit
Assignee: Siemens and Halske AG
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Filing: 1952-06-10
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Granted: 1956-08-14
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Expires: 1972-06-10
Abstract
No abstract record available.
Inventors
- 👤 Hackenberg Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:43
CPC Classifications
H; H03; H03H; H03H1/00; H03H1/0007; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE660890C
Cited
US2163775A
Cited
US2430433A
Cited
US2405515A
Cited
US2464377A
Cited
US2626318A
Cited
US2668946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |