US3526239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen diluter system
Assignee: Robertshaw Controls Co
•
Filing: 1964-11-25
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Granted: 1970-09-01
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Expires: 1984-11-25
Abstract
No abstract record available.
Inventors
- 👤 August Oroza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:29
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/12; A62; A62B; A62B7/00; A62B7/14; A62B9/00; A62B9/02; A62B9/022; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2572
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) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |