US3535738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diehead clamping means for extruders
Assignee: Fried Krupp AG
•
Filing: 1968-03-20
•
Granted: 1970-10-27
•
Expires: 1988-03-20
Abstract
No abstract record available.
Inventors
- 👤 Karl Vossen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:54
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/256; B29C48/2562; B29C48/03; B29C48/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1932063A
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US1947202A
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US2200871A
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US2655710A
Cited
US2486474A
Cited
IT592409B
Cited
US2897543A
Cited
US3304579A
Cited
US3407441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |