Patent US2837853A successfully refreshed from Google Patents.
US2962298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer landing gear
Assignee: Individual
•
Filing: 1958-06-18
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Granted: 1960-11-29
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Expires: 1978-06-18
Abstract
No abstract record available.
Inventors
- 👤 Hefling Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:45
CPC Classifications
B; B60; B60S; B60S9/00; B60S9/14; B60S9/16; B60D; B60D1/00; B60D1/58; B60D1/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1161706A
Cited
CH211222A
Cited
US2205436A
Cited
US2572410A
Cited
US2571067A
Cited
DE811649C
Cited
US2692143A
Cited
US2724590A
Cited
US2786690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |