Patent FR665530A successfully refreshed from Google Patents.
Patent US2456826A successfully refreshed from Google Patents.
US2456826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer coupler
Assignee: FONTAINE
•
Filing: 1946-04-11
•
Granted: 1948-12-21
•
Expires: 1966-04-11
Abstract
No abstract record available.
Inventors
- 👤 John P K Fontaine
- 👤 Arnoldus S Brumby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:34
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0885
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2102821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |