US2557442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator
Assignee: Individual
•
Filing: 1948-01-02
•
Granted: 1951-06-19
•
Expires: 1968-01-02
Abstract
No abstract record available.
Inventors
- 👤 Paul J Kurilo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:13
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/24; B60H1/26; B60H1/267
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1588654A
Cited
US1745186A
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US1664829A
Cited
US1678743A
Cited
US1665130A
Cited
US1678748A
Cited
US1825192A
Cited
US1723995A
Cited
US1825437A
Cited
US1986200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |