US2588376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency response analysis
Assignee: Individual
•
Filing: 1947-07-03
•
Granted: 1952-03-11
•
Expires: 1967-07-03
Abstract
No abstract record available.
Inventors
- 👤 Fox Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:52
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/28; G01R27/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2203750A
Cited
US2175001A
Cited
US2356510A
Cited
US2375695A
Cited
US2387685A
Cited
FR912880A
Cited
US2534957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |