US2533296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extractor provided with means for unloading it
Assignee: Hercules Powder Co
•
Filing: 1947-08-15
•
Granted: 1950-12-12
•
Expires: 1967-08-15
Abstract
No abstract record available.
Inventors
- 👤 Stuart Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:06
CPC Classifications
C; C09; C09F; C09F1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US528418A
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US718246A
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US1067781A
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US1223047A
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US1619297A
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US1589810A
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US1839456A
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US1922330A
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US2086180A
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US2301617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |