Patent US2879784A successfully refreshed from Google Patents.
US2879784A
Expired / Lapsed
US
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Check valve for the administration of parenteral solutions
Assignee: Bayer Corp
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Filing: 1954-03-08
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Granted: 1959-03-31
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Expires: 1974-03-08
Abstract
No abstract record available.
Inventors
- 👤 Fred A Cutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:11
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/36; A61M5/40; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/7287; Y10T137/7313; Y10T137/7323; Y10T137/7326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US310529A
Cited
US932153A
Cited
US895702A
Cited
GB115599A
Cited
US2186987A
Cited
US2644586A
Cited
US2672051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |