US2656515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave guide impedance transformer
Assignee: Unisys Corp
•
Filing: 1950-04-06
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Granted: 1953-10-20
•
Expires: 1970-04-06
Abstract
No abstract record available.
Inventors
- 👤 Olive D Ross
- 👤 Montgomery H Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:39
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2125597A
Cited
US2106768A
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US2106769A
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US2129669A
Cited
US2408745A
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US2407911A
Cited
US2405174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |