US2427752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentric line lamp for measuring high-frequency power
Assignee: General Electric Co
•
Filing: 1943-09-02
•
Granted: 1947-09-23
•
Expires: 1963-09-02
Abstract
No abstract record available.
Inventors
- 👤 Edward L Strempel
- 👤 James E Beggs
- 👤 Harry W A Chalberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:27
CPC Classifications
G; G01; G01R; G01R21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1712996A
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US2106713A
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US2191271A
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US2393711A
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US2304186A
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US2401637A
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US2311520A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-22 | 1951-03-24 | 1951-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-22 | 1955-03-24 | 1955-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-22 | 1959-03-24 | 1959-09-23 | $7700.00 | Window Closed / Lapsed |