US2547201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loop control system
Assignee: Westinghouse Electric Corp
•
Filing: 1949-06-30
•
Granted: 1951-04-03
•
Expires: 1969-06-30
Abstract
No abstract record available.
Inventors
- 👤 Hugh S Fegely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:08
CPC Classifications
G; G05; G05D; G05D15/00; G05D15/01; B; B65; B65H; B65H23/00; B65H23/04; B65H23/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1608761A
Cited
US2432876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |