US2626557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator
Assignee: Individual
•
Filing: 1950-08-28
•
Granted: 1953-01-27
•
Expires: 1970-08-28
Abstract
No abstract record available.
Inventors
- 👤 Hersch Sam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:38
CPC Classifications
F; F23; F23L; F23L17/00; F23L17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US164652A
Cited
CH14230A
Cited
GB189920150A
Cited
US688693A
Cited
US780378A
Cited
GB190725839A
Cited
US1033060A
Cited
DE333820C
Cited
US1240081A
Cited
GB217085A
Cited
US2399384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |