US3137293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shield for mouth-to-mouth resuscitation
Assignee: Individual
•
Filing: 1961-04-18
•
Granted: 1964-06-16
•
Expires: 1981-04-18
Abstract
No abstract record available.
Inventors
- 👤 Matthias E Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:35
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0048; A61M16/04; A61M16/0488; A61M16/049; A61M16/0495
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3013554A
Cited
US3006337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |