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US3512864A
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Ferroelectric ceramic optical retardation devices
Assignee: United States Atomic Energy Commission
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Filing: 1967-09-14
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Granted: 1970-05-19
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Expires: 1987-09-14
Abstract
No abstract record available.
Inventors
- 👤 Gene H Haertling
- 👤 Cecil E Land
- 👤 Ira D Mckinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:58
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/055
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2600962A
Cited
US2928075A
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US3027806A
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US3167607A
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US3083262A
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US3423686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |