US2572253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow and temperature responsive fluid conditioning system
Assignee: Elsag Bailey Inc
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Filing: 1947-12-24
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Granted: 1951-10-23
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Expires: 1967-12-24
Abstract
No abstract record available.
Inventors
- 👤 Frank H Fellows
- 👤 Harry E Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:07
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/50; G05; G05D; G05D11/00; G05D11/02; G05D11/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |