US2764152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mask for applying gases
Assignee: JOEL CLARK
•
Filing: 1953-05-12
•
Granted: 1956-09-25
•
Expires: 1973-05-12
Abstract
No abstract record available.
Inventors
- 👤 Samuel O Osterberg
- 👤 Charles J Mcgovern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:04
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0605; A61M16/0627; A61M16/0683; A61M16/0694
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |