US2486573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatically controlled valve
Assignee: CLEVELAND RES CORP
•
Filing: 1947-01-21
•
Granted: 1949-11-01
•
Expires: 1967-01-21
Abstract
No abstract record available.
Inventors
- 👤 Milton F Pravda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:47
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/185; G05D23/1854
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US554398A
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US624046A
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GB190123138A
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US991064A
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US1466243A
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US1985100A
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US2171272A
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US2192633A
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US2280345A
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US2310594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |