Patent US2827677A successfully refreshed from Google Patents.
US2827677A
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US
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Mold shakeout apparatus
Assignee: Simpson Herbert Corp
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Filing: 1954-08-02
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Granted: 1958-03-25
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Expires: 1974-08-02
Abstract
No abstract record available.
Inventors
- 👤 Axel G Granath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:59
CPC Classifications
B; B22; B22D; B22D29/00; B22D29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US667975A
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US708698A
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US1047252A
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US1893633A
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US2236471A
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US2524887A
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US2431174A
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US2525572A
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US2597246A
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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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |