US3464087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-channel extrusion die for the production of multilayer thermoplastic sheet materials
Assignee: STANDARD CHARTERED BANK
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Filing: 1967-08-08
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Granted: 1969-09-02
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Expires: 1987-08-08
Abstract
No abstract record available.
Inventors
- 👤 Edward J Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:05
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/307; B29C48/03; B29C48/07; B29C48/08; B29C48/16; B29C48/18; B29C48/21
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) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |