US2832938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarization plane rotator for microwave energy
Assignee: Individual
•
Filing: 1952-08-18
•
Granted: 1958-04-29
•
Expires: 1972-08-18
Abstract
No abstract record available.
Inventors
- 👤 George T Rado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:21
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/165; H01P1/175
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2197123A
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US2402948A
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DE806150C
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US2650350A
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US2644930A
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US2645758A
Cited
US2719274A
Cited
US2784382A
Cited
US2760162A
Cited
US2787765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |