US1630146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hemacytometer
Assignee: Firm Of C A Hausser & Son
•
Filing: 1925-08-25
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Granted: 1927-05-24
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Expires: 1945-08-25
Abstract
No abstract record available.
Inventors
- 👤 Trenner Simeon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:12
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/10; G01N15/14; G02; G02B; G02B21/00; G02B21/34; G01N2015/1006; G01N2015/1486
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) | 1930-05-23 | 1930-11-22 | 1931-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-05-23 | 1934-11-22 | 1935-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-05-23 | 1938-11-22 | 1939-05-24 | $7700.00 | Window Closed / Lapsed |