US2456562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually operated vapor compression sea water still
Assignee: Individual
•
Filing: 1946-05-07
•
Granted: 1948-12-14
•
Expires: 1966-05-07
Abstract
No abstract record available.
Inventors
- 👤 Duncan D Lindsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:25
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/18; Y; Y10; Y10S; Y10S203/00; Y10S203/01; Y10S203/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US838195A
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US1489009A
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US2185595A
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US2339862A
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US2375640A
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US2368665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |