US2714657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for obtaining r.-f. response curves
Assignee: Individual
•
Filing: 1945-09-14
•
Granted: 1955-08-02
•
Expires: 1965-09-14
Abstract
No abstract record available.
Inventors
- 👤 James H Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:36
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/28; G01R27/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21955E
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US2024614A
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US2162827A
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US2130032A
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US2128801A
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US2252058A
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US2581847A
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US2416346A
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US2502294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-01 | 1959-01-31 | 1959-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-01 | 1963-01-31 | 1963-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-01 | 1967-01-31 | 1967-08-02 | $7700.00 | Window Closed / Lapsed |