US1948631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sample taking apparatus
Assignee: Individual
•
Filing: 1932-04-15
•
Granted: 1934-02-27
•
Expires: 1952-04-15
Abstract
No abstract record available.
Inventors
- 👤 Robichaux Sosthene
- 👤 George J Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:11
CPC Classifications
E; E21; E21B; E21B25/00; E21B25/02
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) | 1937-02-26 | 1937-08-28 | 1938-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-02-26 | 1941-08-28 | 1942-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-02-26 | 1945-08-28 | 1946-02-27 | $7700.00 | Window Closed / Lapsed |