US2973580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for use in analyzing blood
Assignee: American Optical Corp
•
Filing: 1958-09-24
•
Granted: 1961-03-07
•
Expires: 1978-09-24
Abstract
No abstract record available.
Inventors
- 👤 Merden G Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:17
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/04; G01N15/05; G01N21/00; G01N21/17; G01N21/25; G01N21/29
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US581472A
Cited
US2840915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |