US2498073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave electrical testing system
Assignee: AT&T Inc
•
Filing: 1946-05-11
•
Granted: 1950-02-21
•
Expires: 1966-05-11
Abstract
No abstract record available.
Inventors
- 👤 William A Edson
- 👤 Ira G Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:14
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/40; G01S7/4004; G01S7/4008; H; H01; H01P; H01P1/00; H01P1/10; H01P1/12; H01P1/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2281274A
Cited
US2235010A
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US2350907A
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US2283895A
Cited
US2311520A
Cited
US2411553A
Cited
US2422601A
Cited
US2414456A
Cited
US2405814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |