Patent US2489054A successfully refreshed from Google Patents.
US2489054A
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Assignee: National Sugar Refining Co
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Filing: 1946-09-07
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Granted: 1949-11-22
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Expires: 1966-09-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph V Sprolle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:35
CPC Classifications
B; B65; B65D; B65D71/00; B65D71/0088; B65D71/0092; B65D71/0096; B65D2519/00; B65D2519/00004; B65D2519/00009; B65D2519/00014; B65D2519/00019; B65D2519/00049; B65D2519/00054; B65D2519/00258; B65D2519/00263; B65D2519/00268; B65D2519/00283; B65D2519/00288; B65D2519/00313; B65D2519/00318; B65D2519/00328; B65D2519/00333; B65D2519/00343; B65D2519/00547; B65D2519/00552; B65D2519/00557; B65D2519/00562; B65D2571/00; B65D2571/00006; B65D2571/00043; B65D2571/00061; B65D2571/00067; B65D2571/0008; B65D2571/00092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |