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US3230601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for makng a direct writing cathode ray tube
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1964-11-02
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Granted: 1966-01-25
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Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 Jimmy E Wurtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:30
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/02; H01J31/06; H01J31/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A METHOD OF TREATING A FACEPLATE TARGET STRUCTURE FOR A CATHODE RAY TUBE HAVING A PLURALITY OF FINE WIRES EMBEDDED THEREIN RUNNING FROM A FIRST SIDE OF THE STRUCTURE TO A SECOND OPPOSITE SIDE, THE COMBINATION OF STEPS COMPRISING: PREPARING THE FIRST SIDE OF SAID STRUCTURE TO HAVE A PLANAR SURFACE; ETCHING BACK THE FIRST SIDE OF SAID STRUCTURE SO THAT THE WIRES PROJECT OUT FROM THE FIRST SURFACE; BENDING SAID PROJECTED WIRES PARALLEL TO SAID FIRST SURFACE; AND FURTHER ETCHING BACK THE FIRST SIDE OF SAID STRUCTURE SO THAT THE FOLDED WIRE PROJECT OUT FROM THE FIRST SURFACE.
Claim 2
Dependent Claim
100 words
IN A METHOD OF TREATING A FACEPLATE TARGET STRUCTURE FOR A CATHODE RAY TUBE HAVING A PLURALITY OF FINE WIRES EMBEDDED THEREIN RUNNING FROM A FIRST SIDE OF THE STRUCTURE TO A SECOND OPPOSITE SIDE, THE COMBINATION OF STEPS COMPRISING: PREPARING THE FIRST SIDE OF SAID STRUCTURE TO HAVE A PLANAR SURFACE; ETCHING BACK THE FIRST SIDE OF SAID STRUCTURE SO THAT THE WIRES PROJECT OUT FROM THE FIRST SURFACE; BENDING SAID PROJECTED WIRES PARALLEL TO SAID FIRST SURFACE; AND FURTHER ETCHING BACK THE FIRST SIDE OF SAID STRUCTURE SO THAT THE FOLDED WIRE PROJECT OUT FROM THE FIRST SURFACE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |