US2039219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Haemacytometer
Assignee: Individual
•
Filing: 1933-03-17
•
Granted: 1936-04-28
•
Expires: 1953-03-17
Abstract
No abstract record available.
Inventors
- 👤 Hausser Carl Adolph
- 👤 Hausser Anthony Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:51
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5027; A; A61; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/150358; B01L2200/00; B01L2200/02; B01L2200/025; B01L2200/06; B01L2200/0642; B01L2300/00; B01L2300/04; B01L2300/041; B01L2300/08; B01L2300/0809; B01L2300/0822; B01L2400/00; B01L2400/04; B01L2400/0403; B01L2400/0406
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-04-28 | 1939-10-28 | 1940-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-04-28 | 1943-10-28 | 1944-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-04-28 | 1947-10-28 | 1948-04-28 | $7700.00 | Window Closed / Lapsed |