US2967525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removing of secretions from air ducts and lungs
Assignee: Individual
•
Filing: 1957-01-28
•
Granted: 1961-01-10
•
Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Stoffregen Jurgen
- 👤 Oehmig Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:23
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/71; A61M1/74; A61M1/75; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US42721A
Cited
US196206A
Cited
US2185067A
Cited
US2301781A
Cited
US2648331A
Cited
US2737177A
Cited
US2659364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |