US2567210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra-high-frequency attenuator
Assignee: Unisys Corp
•
Filing: 1947-07-23
•
Granted: 1951-09-11
•
Expires: 1967-07-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph V Hupcey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:53
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/24; H01P1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2210636A
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US2232179A
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US2207845A
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US2433368A
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US2430130A
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US2423396A
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GB583501A
Cited
US2409599A
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US2482173A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |