Patent US646313A successfully refreshed from Google Patents.
US646313A
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US
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Apparatus for decomposing alkali sulfates.
Assignee: Individual
•
Filing: 1899-03-18
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Granted: 1900-03-27
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Expires: 1919-03-18
Abstract
No abstract record available.
Inventors
- 👤 John Gustaf Adolf Rhodin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:07
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/005; C25B1/00; C25B1/01; C25B1/22; C25C; C25C1/00; C25C1/02; C25C1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1903-03-27 | 1903-09-26 | 1904-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-03-27 | 1907-09-26 | 1908-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-03-27 | 1911-09-26 | 1912-03-27 | $7700.00 | Window Closed / Lapsed |