US2483722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen valve
Assignee: Individual
•
Filing: 1945-05-02
•
Granted: 1949-10-04
•
Expires: 1965-05-02
Abstract
No abstract record available.
Inventors
- 👤 Bennett Vivian Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:25
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7781
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US122544A
Cited
US1145601A
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US1553940A
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US1637085A
Cited
US1640552A
Cited
US2269904A
Cited
US2268172A
Cited
US2310189A
Cited
US2378123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |