US2879382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field strength meter
Assignee: Individual
•
Filing: 1954-04-28
•
Granted: 1959-03-24
•
Expires: 1974-04-28
Abstract
No abstract record available.
Inventors
- 👤 Freen Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/08; G01R29/0864; G01R29/0871
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2104211A
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US2283919A
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US2273090A
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US2354086A
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US2453160A
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US2561128A
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US2618743A
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US2650996A
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US2644136A
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US2748267A
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US2700730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |