Patent US2601928A successfully refreshed from Google Patents.
US2601928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupler
Assignee: ACF Industries Inc
•
Filing: 1948-07-30
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Granted: 1952-07-01
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Expires: 1968-07-30
Abstract
No abstract record available.
Inventors
- 👤 Walsh Robert
- 👤 Jack D Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:48
CPC Classifications
B; B61; B61G; B61G5/00; B61G5/02; B61F; B61F3/00; B61F3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US296859A
Cited
US1293315A
Cited
US1360706A
Cited
US2279993A
Cited
US2217034A
Cited
US2373348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |