US2465533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator
Assignee: Individual
•
Filing: 1945-12-08
•
Granted: 1949-03-29
•
Expires: 1965-12-08
Abstract
No abstract record available.
Inventors
- 👤 Harold B Hawes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:54
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/02; B; B60; B60H; B60H1/00; B60H1/24; B60H1/248; B63; B63H; B63H1/00; B63H1/30; B63H1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US329680A
Cited
US693022A
Cited
US832247A
Cited
US841455A
Cited
US2004762A
Cited
US2307272A
Cited
US2388759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |