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US2725602A
Expired / Lapsed
US
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Hinged wall of folding house trailer
Assignee: H THEODORE FRANCIS
•
Filing: 1952-07-15
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Granted: 1955-12-06
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Expires: 1972-07-15
Abstract
No abstract record available.
Inventors
- 👤 Hilmer T Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:12
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/32; B60P3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1071730A
Cited
US1276941A
Cited
GB418915A
Cited
US2202747A
Cited
FR836168A
Cited
US2589416A
Cited
US2539151A
Cited
US2582635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |