US3489639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene/glass fibre laminate
Assignee: Acordis UK Ltd
•
Filing: 1967-07-19
•
Granted: 1970-01-13
•
Expires: 1987-07-19
Abstract
No abstract record available.
Inventors
- 👤 John G Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:40
CPC Classifications
B; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/322; Y10T442/3228; Y10T442/3236; Y10T442/3252; Y10T442/3854; Y10T442/3886
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2482164A
Cited
US2475083A
Cited
US2642370A
Cited
US2828776A
Cited
US3131113A
Cited
US3205913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |