US2803184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator cover
Assignee: SAWCO Inc A CORP
•
Filing: 1952-05-19
•
Granted: 1957-08-20
•
Expires: 1972-05-19
Abstract
No abstract record available.
Inventors
- 👤 Wasserman Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:36
CPC Classifications
F; F23; F23L; F23L17/00; F23L17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US222939A
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US389398A
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US679912A
Cited
US846074A
Cited
US932659A
Cited
US1523463A
Cited
US2139014A
Cited
US2401902A
Cited
US2679202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |