US2647514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for collecting and preserving blood
Assignee: American Optical Corp
•
Filing: 1951-06-29
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Granted: 1953-08-04
•
Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 Charles A Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:45
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/369; A61M1/3672; A61M2205/00; A61M2205/36; A61M2205/366; A61M5/00; A61M5/14; A61M5/142; A61M5/145; A61M5/14586; A61M5/14593; Y; Y10; Y10S; Y10S604/00; Y10S604/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB429612A
Cited
US2409734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |