Patent US5185613A successfully refreshed from Google Patents.
Patent US3039469A successfully refreshed from Google Patents.
US3039469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct suction tracheotomy tube
Assignee: Individual
•
Filing: 1960-05-09
•
Granted: 1962-06-19
•
Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 Josephine G Fountain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:32
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0463; A61M16/0402; A61M16/0427; A61M16/0465; A61M16/08; A61M16/0816; A61M16/0833; A61M16/0488; A61M16/0497
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1835757A
Cited
US2584450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |