US2946155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving soil texture
Assignee: CRAIG FRIEL M
•
Filing: 1952-08-29
•
Granted: 1960-07-26
•
Expires: 1972-08-29
Abstract
No abstract record available.
Inventors
- 👤 Louise S Barnhill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:06
CPC Classifications
A; A01; A01G; A01G7/00; B; B09; B09C; B09C1/00; B09C1/08; C; C09; C09K; C09K17/00; C09K17/14; C09K17/40
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |