US2870010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing electrical apparatus
Assignee: Lanteris Space LLC
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Filing: 1954-02-04
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Granted: 1959-01-20
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Expires: 1974-02-04
Abstract
No abstract record available.
Inventors
- 👤 Sadowsky Meier
- 👤 Stuart L Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:10
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271; H01J9/2272; H01J9/2273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF FORMING AN OPTICAL MASK FOR USE IN PRODUCING A SCREEN STRUCTURE ON THE CONCAVE INTERIOR SURFACE OF A CURVED CATHODE RAY TUBE FACEPLATE, SAID METHOD COMPRISING THE STEPS OF: SUBJECTING A SUBSTANTIAL REPLICA OF SAID FACEPLATE PROVIDED WITH A LIGHT DIFFUSING SURFACE ON ITS CONCAVE SIDE TO ILLUMINATION BY LIGHT TRANSMITTED TO SAID REPLICA FROM ITS CONVEX SIDE ALONG DIVERGING PATHS THROUGH THE TRANSLUCENT PORTIONS OF A PREEXISTING PLANE-SURFACED MASK HAVING ALTERNATE TRANSLUCENT AND OPAQUE PORTIONS, THEREBY TO FORM ON SAID DIFFUSING SUR-
Claim 2
Independent Claim
86 words
THE METHOD OF FORMING AN OPTICAL MASK FOR USE IN PRODUCING A SCREEN STRUCTURE ON THE CONCAVE INTERIOR SURFACE OF A CURVED CATHODE RAY TUBE FACEPLATE, SAID METHOD COMPRISING THE STEPS OF: SUBJECTING A SUBSTANTIAL REPLICA OF SAID FACEPLATE PROVIDED WITH A LIGHT DIFFUSING SURFACE ON ITS CONCAVE SIDE TO ILLUMINATION BY LIGHT TRANSMITTED TO SAID REPLICA FROM ITS CONVEX SIDE ALONG DIVERGING PATHS THROUGH THE TRANSLUCENT PORTIONS OF A PREEXISTING PLANE-SURFACED MASK HAVING ALTERNATE TRANSLUCENT AND OPAQUE PORTIONS, THEREBY TO FORM ON SAID DIFFUSING SUR-
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |