US3423675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring system for two and four terminal networks
Assignee: Rohde and Schwarz GmbH and Co KG
•
Filing: 1965-03-10
•
Granted: 1969-01-21
•
Expires: 1985-03-10
Abstract
No abstract record available.
Inventors
- 👤 Alexander Kraus
- 👤 Josef Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:53
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/28; G01R27/02; G01R27/08; G01R27/10; G01R27/12; G01R27/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2580678A
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US2562281A
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US2775737A
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US2588390A
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US2679632A
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US2650347A
Cited
US3249863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |