US3089142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial dielectric polarizer
Assignee: GTE Sylvania Inc
•
Filing: 1959-10-30
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Granted: 1963-05-07
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Expires: 1979-10-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur F Wickersham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:29
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/24; H01Q15/242; H01Q15/244
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2643336A
Cited
US2923934A
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US2556377A
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US2579324A
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GB665747A
Cited
US2716190A
Cited
US2840820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |