Patent US2665559A successfully refreshed from Google Patents.
US2665559A
Expired / Lapsed
US
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Liquid treating apparatus
Assignee: Individual
•
Filing: 1950-07-14
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Granted: 1954-01-12
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Expires: 1970-07-14
Abstract
No abstract record available.
Inventors
- 👤 Fred H Dexter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:55
CPC Classifications
B; B67; B67D; B67D1/00; B67D1/04; B67D1/0406; F; F25; F25D; F25D31/00; F25D31/002; Y; Y10; Y10S; Y10S261/00; Y10S261/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1919500A
Cited
US1713787A
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US2291768A
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US2276964A
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US2405448A
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US2531315A
Cited
US2432546A
Cited
US2515212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |