US818123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mask for administering anesthetics.
Assignee: Individual
•
Filing: 1905-07-20
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Granted: 1906-04-17
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Expires: 1925-07-20
Abstract
No abstract record available.
Inventors
- 👤 Albert Rousseau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:20
CPC Classifications
A; A61; A61M; A61M13/00; A61M15/00; A61M2202/00; A61M2202/06; A61M2202/064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1909-04-16 | 1909-10-16 | 1910-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-04-16 | 1913-10-16 | 1914-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-04-16 | 1917-10-16 | 1918-04-17 | $7700.00 | Window Closed / Lapsed |