Patent US3474785A successfully refreshed from Google Patents.
US3474785A
Expired / Lapsed
US
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Intermittent positive pressure resuscitator
Assignee: Linde Sverige AB
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Filing: 1967-01-19
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Granted: 1969-10-28
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Expires: 1987-01-19
Abstract
No abstract record available.
Inventors
- 👤 Bernt I Jansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:33
CPC Classifications
A; A62; A62B; A62B7/00; A61; A61M; A61M16/00; A61M16/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
GB216459A
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GB533297A
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US2399643A
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US3158152A
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GB910065A
Cited
US3262446A
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US3366133A
Cited
US3208449A
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US3327704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |