Patent US2641959A successfully refreshed from Google Patents.
US2641959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for measuring the principal dimensions of erythrocytes
Assignee: Individual
•
Filing: 1950-01-09
•
Granted: 1953-06-16
•
Expires: 1970-01-09
Abstract
No abstract record available.
Inventors
- 👤 Verveen Dirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:51
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/02; G01N15/0205
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1974522A
Cited
US1143675A
Cited
US1951523A
Cited
US1959537A
Cited
GB444345A
Cited
GB490910A
Cited
US2355960A
Cited
US2322128A
Cited
FR903872A
Cited
US2519997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |