US3412744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed gas regulator
Assignee: University of California Berkeley
•
Filing: 1965-09-17
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Granted: 1968-11-26
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Expires: 1985-09-17
Abstract
No abstract record available.
Inventors
- 👤 Wilbur J Batzloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:03
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/12; A62; A62B; A62B9/00; A62B9/02; B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/22; B63C11/2209; F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; F16K11/161; G; G05; G05D; G05D11/00; G05D11/003; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/2036; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1793608A
Cited
FR797004A
Cited
US2301439A
Cited
FR61945E
Cited
US3047001A
Cited
US3074434A
Cited
US3308817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |