US3517206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for optical read-out of internal electric field
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1968-04-08
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Granted: 1970-06-23
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Expires: 1988-04-08
Abstract
No abstract record available.
Inventors
- 👤 Donald Sears Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:36
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/02; G; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/0338; G03; G03C; G03C5/00; G03C5/02; G11; G11C; G11C13/00; G11C13/04; G11C13/047; G11C13/048
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) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |