US2435343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power shutoff and signalling apparatus
Assignee: Individual
•
Filing: 1944-05-18
•
Granted: 1948-02-03
•
Expires: 1964-05-18
Abstract
No abstract record available.
Inventors
- 👤 Lewis W Downey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:06
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/08; F02D; F02D17/00; F02D17/04; G; G05; G05G; G05G15/00; G05G15/002; Y; Y10; Y10S; Y10S246/00; Y10S246/02; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2703; Y10T137/8158; Y10T137/8175
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1042151A
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US1361000A
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US1433217A
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US1624093A
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FR576459A
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US1675780A
Cited
US1788941A
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GB301037A
Cited
US1743758A
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US2010960A
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US2208299A
Cited
US2247357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |