Patent US3527079A successfully refreshed from Google Patents.
US3527079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeder hole die with improved metal flow
Assignee: Dow Chemical Co
•
Filing: 1966-08-01
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Granted: 1970-09-08
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Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Karl F Braeuninger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:23
CPC Classifications
B; B21; B21C; B21C25/00; B21C25/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA448529A
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US2135194A
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US2157988A
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US2266189A
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US2366344A
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US2276468A
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US2638213A
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US2673645A
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US2716805A
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US3213662A
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US3240047A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |