US2811693A
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Polarity-true impulse scanning of oscillations
Assignee: Siemens and Halske AG
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Filing: 1955-05-20
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Granted: 1957-10-29
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Expires: 1975-05-20
Abstract
No abstract record available.
Inventors
- 👤 Holzwarth Herbert
- 👤 Arens Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:38
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/52; H03C1/54; H03C1/56; H03C1/58; H03K; H03K7/00; H03K7/02; H04; H04J; H04J3/00; H04J3/02; H04J3/04
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) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |