US2814977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator control device
Assignee: Individual
•
Filing: 1954-06-29
•
Granted: 1957-12-03
•
Expires: 1974-06-29
Abstract
No abstract record available.
Inventors
- 👤 Frank P Noll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:08
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1677421A
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US1737054A
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US1865981A
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GB392686A
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US2084470A
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US2159498A
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US2537315A
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US2474760A
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US2529462A
Cited
US2552735A
Cited
US2754748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |