US2494835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator
Assignee: AIROLITE Co
•
Filing: 1947-08-25
•
Granted: 1950-01-17
•
Expires: 1967-08-25
Abstract
No abstract record available.
Inventors
- 👤 Fred L Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:10
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1627013A
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US1042575A
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US1133089A
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US1788556A
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US1871161A
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US2019378A
Cited
US2217472A
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US2287262A
Cited
US2250787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |