US2503346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic stabilizing control system
Assignee: S Smith and Sons Ltd
•
Filing: 1947-10-21
•
Granted: 1950-04-11
•
Expires: 1967-10-21
Abstract
No abstract record available.
Inventors
- 👤 Meredith Frederick William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:06
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/42; G05; G05D; G05D3/00; G05D3/12; G05D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2352103A
Cited
US890458A
Cited
US2014825A
Cited
US2115086A
Cited
US2168032A
Cited
US2305878A
Cited
US2383461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |