US2562909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impedance transformer for concentric lines
Assignee: Unisys Corp
•
Filing: 1947-05-21
•
Granted: 1951-08-07
•
Expires: 1967-05-21
Abstract
No abstract record available.
Inventors
- 👤 William W Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:17
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/24; H01P1/28; H01P1/20; H01P1/201; H01P1/202; H01P5/00; H01P5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1929878A
Cited
US2226479A
Cited
US2213054A
Cited
GB508297A
Cited
US2342254A
Cited
US2267539A
Cited
US2373233A
Cited
US2401205A
Cited
US2438912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |