US3533755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation resistant lithium tantalate and method of producing same
Assignee: AT&T Inc
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Filing: 1967-03-27
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Granted: 1970-10-13
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Expires: 1987-03-27
Abstract
No abstract record available.
Inventors
- 👤 Albert A Ballman
- 👤 Richard T Denton
- 👤 Hyman J Levinstein
- 👤 Richard G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:39
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/02; H01G7/025; C; C01; C01G; C01G35/00; G; G02; G02F; G02F1/00; G02F1/35; G02F1/3525; C01P; C01P2004/00; C01P2004/30; C01P2004/42; C01P2006/00; C01P2006/40; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |