US2838844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for leveling device
Assignee: Individual
•
Filing: 1955-04-11
•
Granted: 1958-06-17
•
Expires: 1975-04-11
Abstract
No abstract record available.
Inventors
- 👤 Manley R Sackett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:37
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/20; G01C9/22; Y; Y10; Y10S; Y10S56/00; Y10S56/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB372286A
Cited
US2101837A
Cited
US2438758A
Cited
US2532883A
Cited
US2489542A
Cited
US2716169A
Cited
US2728355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |