US2206858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating apparatus
Assignee: Individual
•
Filing: 1937-08-14
•
Granted: 1940-07-02
•
Expires: 1957-08-14
Abstract
No abstract record available.
Inventors
- 👤 Garnet W Mckee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:21
CPC Classifications
F; F24; F24F; F24F12/00; F24F12/001; F24F12/002; F24F2203/00; F24F2203/10; F24F2203/1004; F24F2203/1012; F24F2203/104; F24F2203/1052; F24F2203/1068; F24F2203/1084; Y; Y02; Y02B; Y02B30/00; Y02B30/56; Y10; Y10S; Y10S165/00; Y10S165/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-07-02 | 1944-01-01 | 1944-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-02 | 1948-01-01 | 1948-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-02 | 1952-01-01 | 1952-07-02 | $7700.00 | Window Closed / Lapsed |