US3734815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated safety-glass and cabin furnished therewith
Assignee: Hoogovens En Staalfabrieken Nv nl
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Filing: 1970-09-25
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Granted: 1973-05-22
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Expires: 1990-09-25
Abstract
Abstract LAMINATED SAFETY-GLASS OR BULLET-PROOF GLASS HAS AT LEAST THREE LAYERS OF GLASS WITH PLASTIC LAYERS THEREBETWEEN, ONE OUTER GLASS LAYER IS NO THICKER THAN THE OTHER TWO, A FIRST PLASTIC LAYER ADJACENT THE OTHER OUTER LAYER HAS NOT MORE THAN 13% OF THE THICKNESS OF SAID ONE OUTER GLASS LAYER, AND THE PLASTIC LAYER ADJACENT SAID ONE OUTER GLASS LAYER IS 5 TO 11 TIMES AS THICK AS SAID FIRST PLASTIC LAYER. PLATE GLASS LAYERS AND POLYVINYLACETAL, PREFERABLY POLYVINYLBUTYRAL, PLASTIC LAYERS, ARE PREFERRED, AND RELATIVELY THICK AND REALTIVELY THIN STRUCTURES, AND CABINS HAVING TRANSPARENT WALLS THEREOF, ARE DISCLOSED.
Inventors
- 👤 H Schorel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:27
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10761; B32B17/10009; B32B17/10036; B32B17/10045; B32B17/10165; B32B17/10174; F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0407; B32B2255/00; B32B2255/20; B32B2255/205; B32B2551/00; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |