Patent US2841142A successfully refreshed from Google Patents.
US2841142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anesthetic administering apparatus
Assignee: Airco Inc
•
Filing: 1955-03-25
•
Granted: 1958-07-01
•
Expires: 1975-03-25
Abstract
No abstract record available.
Inventors
- 👤 Wayne W Hay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:53
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/20; A61M16/201; A61M16/208; A61M16/209; A61M16/08; A61M16/0816; A61M16/0833; A61M16/10; A61M16/105; A61M16/106; A61M16/206
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2453475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |