US2564247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of testing urine to determine pregnancy
Assignee: Individual
•
Filing: 1947-08-18
•
Granted: 1951-08-14
•
Expires: 1967-08-18
Abstract
No abstract record available.
Inventors
- 👤 Richard M Carson
- 👤 Reuben R Saeks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:25
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/10; G01N9/12; Y; Y10; Y10T; Y10T436/00; Y10T436/14; Y10T436/145555; Y10T436/147777; Y10T436/25; Y10T436/25125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2195339A
Cited
US2221913A
Cited
US2171961A
Cited
US2171962A
Cited
US2186902A
Cited
US2367268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |