US3666343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying a radiation shield to a second anode button
Assignee: GTE Sylvania Inc
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Filing: 1969-10-14
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Granted: 1972-05-30
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Expires: 1989-10-14
Abstract
Abstract A SUBSTANTIALLY HOLLOW ANODE BUTTON FORMED FOR SEALING IN A GLASS WALL OF A CATHODE RAY TUBE ENVELOPE HAS A RADIATION SHIELD AFFIXED TO ITS BOTTOM SURFACE OF A SIZE COMPATIBLE WITH AN APERTURE IN ITS UPPER SURFACE. THE SHIELD CAN BE AFFIXED BEFORE THE BUTTON IS SEALED IN THE WALL AND IN ONE METHOD COMPRISES THE SALVAGE AREA OF A FORMED WASHER WHICH COMPRISES A PORTION OF THE UPPER SURFACE OF THE BUTTON. IN A SECOND METHOD THE SHIELD IS APPLIED AS A MOLTEN; E.G., LEAD, AFTER A TUBE HAS BEEN EXHAUSTED AND SEALED.
Inventors
- 👤 William H Mcneill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:26
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/867; H01J29/92; H01J29/925
Claims Analysis
Total Claims: 0
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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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |