US3033195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Respirator apparatus and method
Assignee: Airco Inc
•
Filing: 1957-09-16
•
Granted: 1962-05-08
•
Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Gilroy John
- 👤 Jr Lucian G Schlimgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:37
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0003; A61M16/0009; A61M16/0057; A61M16/0081; A61M16/021; A61M16/022; A61M16/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1371702A
Cited
US2121311A
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US2288436A
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US2408136A
Cited
US2427419A
Cited
US2586060A
Cited
US2830580A
Cited
GB767047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |