US2405597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency measuring system
Assignee: AT&T Inc
•
Filing: 1942-11-05
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Granted: 1946-08-13
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Expires: 1962-11-05
Abstract
No abstract record available.
Inventors
- 👤 Ohmer R Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:23
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/14; G01S13/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-08-12 | 1950-02-11 | 1950-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-08-12 | 1954-02-11 | 1954-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-08-12 | 1958-02-11 | 1958-08-13 | $7700.00 | Window Closed / Lapsed |