Patent US3452394A successfully refreshed from Google Patents.
US3452394A
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US
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Extruder heads
Assignee: Andale Co
•
Filing: 1966-10-31
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Granted: 1969-07-01
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Expires: 1986-10-31
Abstract
No abstract record available.
Inventors
- 👤 Daniel R Mcneal Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:54
CPC Classifications
B; B29; B29B; B29B9/00; B29B9/02; B29B9/06; B29B9/065; B29B7/00; B29B7/30; B29B7/58; B29B7/582; B29B7/80; B29B7/82; B29B7/826; B29C; B29C48/00; B29C48/03; B29C48/06; B29C48/25; B29C48/30; B29C48/345; B29C48/78; B29C48/86; B29C48/865; B29C48/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2669195A
Cited
US2759219A
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US3085522A
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US3114169A
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US3212132A
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US3230582A
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US3346915A
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US3271822A
Cited
US3287764A
Cited
US3308507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |