US2875757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marginal shaping and sealing means for respiratory masks
Assignee: Individual
•
Filing: 1954-01-29
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Granted: 1959-03-03
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Expires: 1974-01-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Ellis A Galleher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0683; A62; A62B; A62B18/00; A62B18/02; A62B18/025; A61M2205/00; A61M2205/02; A61M2205/0216
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1105127A
Cited
US1142990A
Cited
GB191516841A
Cited
US1359073A
Cited
US1837591A
Cited
US2540567A
Cited
US2765788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |