US2820671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of distributing soil treating material
Assignee: M B Mcfarland & Sons
•
Filing: 1955-10-03
•
Granted: 1958-01-21
•
Expires: 1975-10-03
Abstract
No abstract record available.
Inventors
- 👤 Gerald B Mcfarland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:00
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/04; A01C23/042; Y; Y10; Y10S; Y10S239/00; Y10S239/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2117091A
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US2723905A
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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) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |