US3535446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for an improved electron beam scanning system
Assignee: National Aeronautics and Space Administration
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Filing: 1968-04-10
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Granted: 1970-10-20
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Expires: 1988-04-10
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Hilborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:25
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/06; G09G1/14; G09G1/16; G09G1/04; H; H04; H04N; H04N3/00; H04N3/10; H04N3/30; H04N3/34
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) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |