Patent US1576137A successfully refreshed from Google Patents.
US1576137A
Expired / Lapsed
US
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Apparatus for concentrating soulutions
Assignee: Individual
•
Filing: 1921-09-19
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Granted: 1926-03-09
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Expires: 1941-09-19
Abstract
No abstract record available.
Inventors
- 👤 Maxwell O Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:47
CPC Classifications
A; A23; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/12; B; B01; B01D; B01D9/00; B01D9/02; B01D9/04
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) | 1929-03-08 | 1929-09-07 | 1930-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-03-08 | 1933-09-07 | 1934-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-03-08 | 1937-09-07 | 1938-03-09 | $7700.00 | Window Closed / Lapsed |