US3463151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual venturi anesthetic gas circulating device
Assignee: WILLIAM B NEFF
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Filing: 1965-09-07
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Granted: 1969-08-26
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Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 William B Neff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:08
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/104; A61M16/12; A61M16/122; A61M16/125; A61M16/127; A61M16/0057; A61M16/0078; A61M16/06; A61M16/08; A61M16/0875; A61M2202/00; A61M2202/02; A61M2202/0208; A61M2202/0241
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) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |