US2682887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level control means for humidifiers
Assignee: STEEL PRODUCTS ENG CO
•
Filing: 1950-07-17
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Granted: 1954-07-06
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Expires: 1970-07-17
Abstract
No abstract record available.
Inventors
- 👤 Delmond L Getz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:52
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; F24F6/043; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; F16K31/24; F16K31/26; F16K31/265; F24D; F24D5/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7329; Y10T137/7358; Y10T137/7365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1788827A
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US1785149A
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US2219473A
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US2183422A
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US2244088A
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US2261234A
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US2338319A
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US2427359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |