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US3430156A
Expired / Lapsed
US
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Polarization diversity system
Assignee: Individual
•
Filing: 1965-06-17
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Granted: 1969-02-25
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Expires: 1985-06-17
Abstract
No abstract record available.
Inventors
- 👤 Martin Katzin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:14
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/10; G; G01; G01S; G01S7/00; G01S7/02; G01S7/024; G01S7/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2925529A
Cited
US3028597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |