US2528124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-blowing whistle for locomotives
Assignee: Individual
•
Filing: 1945-12-01
•
Granted: 1950-10-31
•
Expires: 1965-12-01
Abstract
No abstract record available.
Inventors
- 👤 Elliott Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:20
CPC Classifications
G; G10; G10K; G10K5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US390819A
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US416229A
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US418907A
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US486543A
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US505851A
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US564138A
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US1119583A
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US1577982A
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US1791122A
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US1712339A
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US2044737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |