US2671957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling rairoad cars
Assignee: ACF Industries Inc
•
Filing: 1948-07-31
•
Granted: 1954-03-16
•
Expires: 1968-07-31
Abstract
No abstract record available.
Inventors
- 👤 John W Sheffer
- 👤 Edmund A Watson
- 👤 Arthur C Schanz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:37
CPC Classifications
B; B61; B61D; B61D7/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828; Y10T29/49829; Y10T29/49879
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |