US3497915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion die
Assignee: Cupples Container Co
•
Filing: 1967-03-16
•
Granted: 1970-03-03
•
Expires: 1987-03-16
Abstract
No abstract record available.
Inventors
- 👤 Clifford P Ronden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:46
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/50; B29C44/507; B29C48/00; B29C48/03; B29C48/09; B29C48/10; B29C48/25; B29C48/30; B29C48/32; B29C48/78; B29C48/86; B29C48/865
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1925545A
Cited
US1956330A
Cited
US2821745A
Cited
US3345690A
Cited
US3305893A
Cited
US3311952A
Cited
US3357050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |