US2498156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terracing machine
Assignee: Wilson Chemicals Inc
•
Filing: 1945-09-10
•
Granted: 1950-02-21
•
Expires: 1965-09-10
Abstract
No abstract record available.
Inventors
- 👤 Walter L Dodson
- 👤 James E Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:51
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7695
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US161524A
Cited
US403035A
Cited
US688156A
Cited
US743487A
Cited
US1658354A
Cited
US1767992A
Cited
US2089319A
Cited
US2280234A
Cited
US2280473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |