US3386458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internally actuated combined oxygen pressure regulator and oxygenair dilution valves for respiratory apparatus
Assignee: United States Department of the Air Force
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Filing: 1965-06-18
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Granted: 1968-06-04
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Expires: 1985-06-18
Abstract
No abstract record available.
Inventors
- 👤 Lee S Wasserman
- 👤 Adam J Stolzenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:02
CPC Classifications
A; A62; A62B; A62B7/00; A62B7/14; B; B01; B01F; B01F23/00; B01F23/10; B01F35/00; B01F35/20; B01F35/22; B01F35/221; B01F35/2213; B01F35/71; B01F35/712; B01F35/717; B01F35/7179; B01F35/71805; B01F35/718051; B01F35/75; B01F35/754; B01F35/7547; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2572; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7795; Y10T137/7822; Y10T137/7823; Y10T137/7825; Y10T137/7826; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87643; Y10T137/87917
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) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |