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Patent US2901295A successfully refreshed from Google Patents.
US2901295A
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Vacuum packing gland for high speed stirring
Assignee: American Potash and Chemical Corp
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Filing: 1958-09-12
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Granted: 1959-08-25
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Expires: 1978-09-12
Abstract
No abstract record available.
Inventors
- 👤 Robert R Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:59
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/54; B; B01; B01F; B01F35/00; B01F35/30; B01F2035/35; B01F2035/351; B01F2035/3511
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US342815A
Cited
US893793A
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US1459148A
Cited
US2076200A
Cited
FR805479A
Cited
US2584252A
Cited
US2829931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |