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US2863178A
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US
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Collapsible roof-top structure
Assignee: ROY C HOPGOOD
•
Filing: 1953-10-26
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Granted: 1958-12-09
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Expires: 1973-10-26
Abstract
No abstract record available.
Inventors
- 👤 Erling M Hagen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:30
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/32; B60P3/36; B60P3/38; B60P3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2154365A
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US2503482A
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US2436228A
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US2561168A
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US2480353A
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US2604671A
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FR1014441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |