US1534136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for tank cars
Assignee: ACF Industries Inc
•
Filing: 1920-05-17
•
Granted: 1925-04-21
•
Expires: 1940-05-17
Abstract
No abstract record available.
Inventors
- 👤 Allen E Ostrander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:23
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/07; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/428; Y10T137/4301; Y10T137/8811
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) | 1928-04-20 | 1928-10-20 | 1929-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-04-20 | 1932-10-20 | 1933-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-04-20 | 1936-10-20 | 1937-04-21 | $7700.00 | Window Closed / Lapsed |