US2572199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for vaporizing liquid anesthetics
Assignee: Individual
•
Filing: 1944-11-29
•
Granted: 1951-10-23
•
Expires: 1964-11-29
Abstract
No abstract record available.
Inventors
- 👤 John J Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:39
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/14; A61M16/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1606472A
Cited
US2042474A
Cited
US2136245A
Cited
US2085155A
Cited
US2104988A
Cited
US2223456A
Cited
US2206688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |