US2649564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control system
Assignee: S Smith and Sons Ltd
•
Filing: 1948-08-09
•
Granted: 1953-08-18
•
Expires: 1968-08-09
Abstract
No abstract record available.
Inventors
- 👤 Meredith Frederick William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:49
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1581147A
Cited
US1998939A
Cited
US2361790A
Cited
US2415429A
Cited
US2464629A
Cited
US2451263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |