US2679404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer hitch
Assignee: H W HARTUPEE
•
Filing: 1951-05-01
•
Granted: 1954-05-25
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Expires: 1971-05-01
Abstract
No abstract record available.
Inventors
- 👤 Theodore F Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:28
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/30; B60D1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1540463A
Cited
GB552916A
Cited
US2453941A
Cited
US2541356A
Cited
US2498780A
Cited
US2507189A
Cited
US2549814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |