US2568445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston operated draft hitch for vehicles
Assignee: Individual
•
Filing: 1946-07-23
•
Granted: 1951-09-18
•
Expires: 1966-07-23
Abstract
No abstract record available.
Inventors
- 👤 Peter J Grattan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:20
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/20; E01C19/201; E01C19/202; B; B60; B60D; B60D1/00; B60D1/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US266488A
Cited
US1000004A
Cited
US1741598A
Cited
US1790050A
Cited
US1925020A
Cited
US2057655A
Cited
US2046603A
Cited
US2252691A
Cited
US2252690A
Cited
US2119263A
Cited
US2275970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |