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US3460558A
Expired / Lapsed
US
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Valve device,particularly for breathing apparatus
Assignee: Linde Sverige AB
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Filing: 1966-02-03
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Granted: 1969-08-12
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Expires: 1986-02-03
Abstract
No abstract record available.
Inventors
- 👤 Dag Olof Alfred Johannisson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:21
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/20; A61M16/208; A62; A62B; A62B18/00; A62B18/08; A62B18/10; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/7891
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1412473A
Cited
US1506012A
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US2533965A
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GB799225A
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US3105488A
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US3196890A
Cited
US3356100A
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US3285267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |