US3329545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming a protective facing on a cathode ray tube
Assignee: Douglas Aircraft Co Inc
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Filing: 1964-03-06
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Granted: 1967-07-04
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Expires: 1984-03-06
Abstract
No abstract record available.
Inventors
- 👤 Vern E Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:16
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/02; H; H01; H01J; H01J29/00; H01J29/86; H01J29/87; B29C2791/00; B29C2791/004; B29C2791/006; H01J2229/00; H01J2229/87; H01J2229/875; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/103
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
A METHOD OF CONFORMING A SHEET OF PLASTIC MATERIAL TO THE FRONT WALL OF A CATHODE RAY TUBE, CONSISTING OF: ARRANGING SAID TUBE IN A FIXED POSITION; DISPOSING SAID SHEET IN CLOSELY SPACED RELATION TO SAID FRONT WALL AND TRANSVERSE TO THE AXIS OF SAID TUBE; APPLYING A FORCE TO THE MARGIN OF SAID SHEET IN A DIRECTION TO MOVE IT TOWARD THE REAR OF SAID TUBE UNTIL THE SHEET COMES INTO CONTACT WITH THE CENTRAL PORTION OF SAID FRONT WALL; APPLYING HEAT TO SAID SHEET TO CAUSE IT TO GRADUALLY SOFTEN; AND CONTINUING SAID FORCE TO CAUSE THE MARGIN OF THE SHEET TO CONTINUE TO MOVE REARWARDLY AND GRADUALLY DRAW THE SHEET INTO CONTACT WITH THE ENTIRE AREA OF SAID FRONT WALL AND THE ADJACENT SAID WALL PORTIONS OF SAID TUBE AS THE MATERIAL OF SAID SHEET GRADUALLY SOFTENS.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |