US2490547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for evaporating liquids
Assignee: Vapor Rapid A G
•
Filing: 1948-02-26
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Granted: 1949-12-06
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Expires: 1968-02-26
Abstract
No abstract record available.
Inventors
- 👤 Schraner Alfred
- 👤 Spirig Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:36
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/28; F22B1/287; Y; Y10; Y10S; Y10S159/00; Y10S159/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US350445A
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US995132A
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US1097554A
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US1110482A
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US1580293A
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US1688680A
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US2149667A
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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) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |