US2553881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating system for house trailers
Assignee: Individual
•
Filing: 1948-01-15
•
Granted: 1951-05-22
•
Expires: 1968-01-15
Abstract
No abstract record available.
Inventors
- 👤 Suttles Omar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:56
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00357; B60H1/00364
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE342217C
Cited
US1623383A
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US778204A
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US884404A
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US1512754A
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FR602489A
Cited
US1915380A
Cited
US2013601A
Cited
US2103843A
Cited
US2294363A
Cited
US2326318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |