US2574583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicator device for controlling
Assignee: —
•
Filing: —
•
Granted: 1951-11-13
•
Expires: 1968-11-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:30
CPC Classifications
G; G07; G07C; G07C3/00; G07C3/02; G07C3/04; F; F02; F02N; F02N3/00; F02N3/02; F02D; F02D2400/00; F02D2400/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1585806A
Cited
US1737961A
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US2212930A
Cited
US2325312A
Cited
US1022801A
Cited
US1083917A
Cited
US1146151A
Cited
US1446913A
Cited
US2302260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |