US2495830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator construction
Assignee: Individual
•
Filing: 1946-02-25
•
Granted: 1950-01-31
•
Expires: 1966-02-25
Abstract
No abstract record available.
Inventors
- 👤 Carl J Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:33
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/02; E06B7/03; B; B60; B60H; B60H1/00; B60H1/24; B60H1/26; B60H1/267
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) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |