US2472609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic fluid-flow measuring system
Assignee: Fairchild Semiconductor Corp
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Filing: 1944-11-08
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Granted: 1949-06-07
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Expires: 1964-11-08
Abstract
No abstract record available.
Inventors
- 👤 Jr David W Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:25
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/18; F02D41/185; G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/28; G01F1/76; G01F1/86; G01F15/00; G01F15/02
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) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |