US2846635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic leveling control
Assignee: Preco LLC
•
Filing: 1954-06-08
•
Granted: 1958-08-05
•
Expires: 1974-06-08
Abstract
No abstract record available.
Inventors
- 👤 Reeford P Shea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:13
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/44; G01C19/46; G01C19/50; E; E01; E01C; E01C19/00; E01C19/004; G01C9/00; G01C9/18; Y; Y10; Y10S; Y10S37/00; Y10S37/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190910299A
Cited
US999012A
Cited
US1565763A
Cited
US1626567A
Cited
US1997412A
Cited
US2490628A
Cited
US2806143A
Cited
US2636290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |