US2541313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal comparison indicator
Assignee: X RAY ELECTRONIC CORP
•
Filing: 1947-02-12
•
Granted: 1951-02-13
•
Expires: 1967-02-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Carl A Vossberg
- 👤 Fua Frederic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:27
CPC Classifications
G; G01; G01R; G01R25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1984545A
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US2176742A
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US2129880A
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US2323128A
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US2335265A
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US2418284A
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US2400326A
Cited
US2391532A
Cited
US2434822A
Cited
US2436741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |