US1506012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Westinghouse Air Brake Co
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Filing: 1921-10-13
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Granted: 1924-08-26
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Expires: 1941-10-13
Abstract
No abstract record available.
Inventors
- 👤 Lloyd V Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:47
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/141; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7904; Y10T137/7908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-08-26 | 1928-02-25 | 1928-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-08-26 | 1932-02-25 | 1932-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-08-26 | 1936-02-25 | 1936-08-26 | $7700.00 | Window Closed / Lapsed |