Patent US2521084A successfully refreshed from Google Patents.
US2521084A
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Mandible cushion for oxygen masks
Assignee: Individual
•
Filing: 1949-09-01
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Granted: 1950-09-05
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Expires: 1969-09-01
Abstract
No abstract record available.
Inventors
- 👤 William T Oberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:44
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/04; A61M16/0488; A61M16/049; A61M16/0493; A61M16/06; A61M16/0057; A61M16/0078; A61M2202/00; A61M2202/02; A61M2202/0208; A61M2205/00; A61M2205/33; A61M2205/3375; A62; A62B; A62B9/00; A62B9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2360193A
Cited
US2483157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |