Patent US5604059A successfully refreshed from Google Patents.
Patent US2522951A successfully refreshed from Google Patents.
US2522951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor hitch coupler
Assignee: HARRY K NYBERG
•
Filing: 1948-12-06
•
Granted: 1950-09-19
•
Expires: 1968-12-06
Abstract
No abstract record available.
Inventors
- 👤 Willard D Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:27
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |