Patent US2885542A successfully refreshed from Google Patents.
US2885542A
Expired / Lapsed
US
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Diversity communication receiving system
Assignee: TDK Micronas GmbH
•
Filing: 1955-09-16
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Granted: 1959-05-05
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Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Sichak William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:45
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/02; H01Q13/0275; H01Q13/025; H01Q13/0258; H04; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04B7/0837; H04B7/084; H04B7/0842; H04B7/0848; H04B7/0854; H04B7/10; H04B7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2186422A
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US2272839A
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US2311435A
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US2248215A
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US2531951A
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US2610292A
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US2490061A
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US2567197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |