Patent US2655898A successfully refreshed from Google Patents.
US2655898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making blood films
Assignee: Individual
•
Filing: 1950-10-21
•
Granted: 1953-10-20
•
Expires: 1970-10-21
Abstract
No abstract record available.
Inventors
- 👤 Mcneil Crichton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:00
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/2813
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US186A
Cited
US241492A
Cited
US1442559A
Cited
US1840777A
Cited
US2008952A
Cited
US2081320A
Cited
US2081735A
Cited
US2353852A
Cited
US2402310A
Cited
US2425526A
Cited
US2536311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |