Patent US3520768A successfully refreshed from Google Patents.
US3520768A
Expired / Lapsed
US
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Laminated safety panes of glass and polycarbonate using acrylic ester adhesives
Assignee: Bayer AG
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Filing: 1966-12-12
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Granted: 1970-07-14
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Gunter Peilstocker
- 👤 Karl Dietzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:08
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/36; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/10165; B32B17/10339; B32B17/1055; B32B17/10743; B32B2369/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24942; Y10T428/2495; Y10T428/24959; Y10T428/26; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 0
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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) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |