US3407441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking mechanism for clamping a die on an extruder
Assignee: National Standard Co
•
Filing: 1966-10-14
•
Granted: 1968-10-29
•
Expires: 1986-10-14
Abstract
No abstract record available.
Inventors
- 👤 Victor C Vigansky
- 👤 Edwin E Mallory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:24
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/03; B29C48/07; B29C48/12; B29C48/256; B29C48/2562; B29C48/08; B29L; B29L2030/00; B29L2030/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1427831A
Cited
US1841491A
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US1931872A
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US2035247A
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US2514211A
Cited
US2560022A
Cited
US2543679A
Cited
GB765383A
Cited
US2981977A
Cited
GB1068456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |