Patent US4461952A successfully refreshed from Google Patents.
Patent US3193907A successfully refreshed from Google Patents.
US3193907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed cathode-ray direct writing tube
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1960-03-22
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Granted: 1965-07-13
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Expires: 1980-03-22
Abstract
No abstract record available.
Inventors
- 👤 Norman F Fyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:50
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/02; H01J31/06; H01J31/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN THE METHOD OF TREATING A MOSAIC VITREOUS TARGET STRUCTURE HAVING A PLURALITY OF FINE WIRES IMBEDDED THEREIN RUNNING FROM A FIRST SIDE OF THE STRUCTURE TO A SECOND OPPOSITE SIDE, THE COMBINATION OF STEPS COMPRISING: HEATING THE VITREOUS STRUCTURE TO MAKE IT FLEXIBLE; BENDING THE STRUCTURE TO MAKE THE FIRST SIDE CONVEX AND THE SECOND SIDE CONCAVE; AND CUTTING THE FIRST SIDE TO PROVIDE A PLANAR SURFACE.
Claim 2
Dependent Claim
68 words
IN THE METHOD OF TREATING A MOSAIC VITREOUS TARGET STRUCTURE HAVING A PLURALITY OF FINE WIRES IMBEDDED THEREIN RUNNING FROM A FIRST SIDE OF THE STRUCTURE TO A SECOND OPPOSITE SIDE, THE COMBINATION OF STEPS COMPRISING: HEATING THE VITREOUS STRUCTURE TO MAKE IT FLEXIBLE; BENDING THE STRUCTURE TO MAKE THE FIRST SIDE CONVEX AND THE SECOND SIDE CONCAVE; AND CUTTING THE FIRST SIDE TO PROVIDE A PLANAR SURFACE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |