US3180774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making display device
Assignee: Burtek Inc
•
Filing: 1961-04-17
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Granted: 1965-04-27
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Expires: 1981-04-17
Abstract
No abstract record available.
Inventors
- 👤 John H Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:02
CPC Classifications
H; H02; H02B; H02B15/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A METHOD OF PRODUCING A DISPLAY DEVICE, COMPRISING THE STEPS OF KNURLING SIMULTANEOUSLY BOTH LINGITUDINAL SIDE EDGES OF AN ELONGATED FLAT METAL STRIP HAVING A PAIR OF PARALLEL LONGITUDINAL SIDE EDGES, APPLYING TO ONE SIDE OF A FLAT LIGHT PENETRABLE PANEL OF LAYER OF A HARDENABLE LIGHT-PENETRABLE PLASTIC MATERIAL IN LIQUID PHASE, EMBEDDING ONE KNURLED LONGITUDINAL SIDE EDGE OF THE STRIP IN THE PLASTIC MATERIAL WHILE THE PLASTIC MATERIAL IS STILL IN LIQUID PHASE, AND MAINTAINING THE PLANE OF THE STRIP PERPENDICULAR TO THE PLANE OF THE PANEL UNTIL THE PLASTIC MATERIAL HARDENS TO A SOLID PHASE ABOUT SAID ONE EDGE OF THE STRIP.
Claim 2
Independent Claim
104 words
A METHOD OF PRODUCING A DISPLAY DEVICE, COMPRISING THE STEPS OF KNURLING SIMULTANEOUSLY BOTH LINGITUDINAL SIDE EDGES OF AN ELONGATED FLAT METAL STRIP HAVING A PAIR OF PARALLEL LONGITUDINAL SIDE EDGES, APPLYING TO ONE SIDE OF A FLAT LIGHT PENETRABLE PANEL OF LAYER OF A HARDENABLE LIGHT-PENETRABLE PLASTIC MATERIAL IN LIQUID PHASE, EMBEDDING ONE KNURLED LONGITUDINAL SIDE EDGE OF THE STRIP IN THE PLASTIC MATERIAL WHILE THE PLASTIC MATERIAL IS STILL IN LIQUID PHASE, AND MAINTAINING THE PLANE OF THE STRIP PERPENDICULAR TO THE PLANE OF THE PANEL UNTIL THE PLASTIC MATERIAL HARDENS TO A SOLID PHASE ABOUT SAID ONE EDGE OF THE STRIP.
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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) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |