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US2709604A
Expired / Lapsed
US
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Resilient support for trailer tongues
Assignee: Individual
•
Filing: 1952-07-03
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Granted: 1955-05-31
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Expires: 1972-07-03
Abstract
No abstract record available.
Inventors
- 👤 Charles T Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:32
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)
GB188308A
Cited
US2546206A
Cited
US2519564A
Cited
US2493874A
Cited
US2597657A
Cited
US2643891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |