US3530702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruding method and apparatus and parts therefor
Assignee: Reynolds Metals Co
•
Filing: 1967-08-29
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Granted: 1970-09-29
•
Expires: 1987-08-29
Abstract
No abstract record available.
Inventors
- 👤 Ernst J De Ridder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:22
CPC Classifications
B; B21; B21C; B21C33/00; B21C23/00; B21C23/02; B21C23/20; B21C23/205; B21C23/21; B21C23/212; B21C23/218; B21C35/00; B21C35/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1609988A
Cited
GB254293A
Cited
US1661594A
Cited
US2167845A
Cited
US3178925A
Cited
US3184944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |