US2289639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen delivery apparatus
Assignee: Individual
•
Filing: 1940-12-23
•
Granted: 1942-07-14
•
Expires: 1960-12-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Fausek
- 👤 Irwing F Fausek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:18
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/02; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0338; F17C2205/0382; F17C2205/0385; F17C2221/00; F17C2221/01; F17C2221/011; F17C2227/00; F17C2227/03; F17C2227/0302; F17C2227/0304; F17C2270/00; F17C2270/01; F17C2270/0186; F17C2270/0189; F17C2270/02; F17C2270/025; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7795; Y10T137/7809; Y10T137/7812; Y10T137/7813; Y10T137/7822; Y10T137/7828
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) | 1945-07-13 | 1946-01-12 | 1946-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-13 | 1950-01-12 | 1950-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-13 | 1954-01-12 | 1954-07-14 | $7700.00 | Window Closed / Lapsed |