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Patent US2798488A successfully refreshed from Google Patents.
US2798488A
Expired / Lapsed
US
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Syringe unit
Assignee: Merck and Co Inc
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Filing: 1954-09-15
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Granted: 1957-07-09
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Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 Victor C Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:11
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/20; A61J1/2089; A61M; A61M3/00; A61M5/00; A61M5/178; A61M5/28; A61M5/284; A61J1/2003; A61J1/2006; A61J1/201; A61J1/202; A61J1/2044; A61M5/281; A61M5/282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB443274A
Cited
US2654948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |