US2771878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravenous infusion system
Assignee: American Optical Corp
•
Filing: 1952-08-27
•
Granted: 1956-11-27
•
Expires: 1972-08-27
Abstract
No abstract record available.
Inventors
- 👤 Willard E Folland
- 👤 Charles A Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:34
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/1414; A61M5/1415; A61M5/168; A61M5/16831; A61M5/1684; A61M5/16845; A61M5/16877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US518009A
Cited
US1360833A
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US1593172A
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US2014314A
Cited
US2470481A
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US2626631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |