US2857911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Respiratory mouthpiece
Assignee: Bennett Respiration Products Inc
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Filing: 1956-11-19
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Granted: 1958-10-28
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Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Bennett Vivian Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0488; A61B; A61B5/00; A61B5/08; A61B5/097; A61M16/049; A61M16/0493; A61M16/0497; A62; A62B; A62B9/00; A62B9/06; A61M16/01
Claims Analysis
Total Claims: 0
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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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |