US2625835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive mechanism for soil sampling apparatus
Assignee: Individual
•
Filing: 1950-02-20
•
Granted: 1953-01-20
•
Expires: 1970-02-20
Abstract
No abstract record available.
Inventors
- 👤 Marek Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:56
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/027; E21B7/003; E21B7/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US596281A
Cited
US1367306A
Cited
US2392683A
Cited
US2447730A
Cited
US2568958A
Cited
US2511508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |