Patent US2599490A successfully refreshed from Google Patents.
US2599490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic leveling mechanism for land levelers
Assignee: Individual
•
Filing: 1947-06-19
•
Granted: 1952-06-03
•
Expires: 1967-06-19
Abstract
No abstract record available.
Inventors
- 👤 Seminario Isadore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:43
CPC Classifications
A; A01; A01B; A01B31/00; Y; Y10; Y10S; Y10S37/00; Y10S37/907
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US460919A
Cited
US1778690A
Cited
US1722725A
Cited
US1936518A
Cited
US2027685A
Cited
US2128273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |