Patent US3056915A successfully refreshed from Google Patents.
US3056915A
Expired / Lapsed
US
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Circuit of high alternating current impedance for feeding a constant direct current to a circuit
Assignee: US Philips Corp
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Filing: 1958-08-28
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Granted: 1962-10-02
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Expires: 1978-08-28
Abstract
No abstract record available.
Inventors
- 👤 Meewezen Willem Douwe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:27
CPC Classifications
H; H04; H04Q; H04Q3/00; G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/563; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/20; G05F3/22; H04B; H04B3/00; H04B3/02; H04B3/44; H04M; H04M1/00; H04M1/738; H04M1/76; H04M19/00; H04M19/001; H04M19/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |