US2866499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and processes for concentrating and evaporating liquids
Assignee: EIDP Inc
•
Filing: 1955-08-01
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Granted: 1958-12-30
•
Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 Floyd C Haley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:42
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/22; B01D1/222; B01D1/223; B01D1/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US548986A
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US868275A
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US1186175A
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US1443714A
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US1732805A
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US2256356A
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US2581081A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |