US3429956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for continuously casting elongated foam-cored laminates
Assignee: Pharmacia and Upjohn Co
•
Filing: 1964-09-14
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Granted: 1969-02-25
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Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Lawrence Christie Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:29
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/32; B29C44/322; B29C44/324; Y; Y10; Y10S; Y10S521/00; Y10S521/917; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24777; Y10T428/24942; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999
Claims Analysis
Total Claims: 0
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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) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |