US2807499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compress air spreader for a vehicle tarpaulin cover
Assignee: Individual
•
Filing: 1955-04-29
•
Granted: 1957-09-24
•
Expires: 1975-04-29
Abstract
No abstract record available.
Inventors
- 👤 Kenneth J Duddleston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:25
CPC Classifications
B; B60; B60J; B60J7/00; B60J7/02; B60J7/06; B60J7/061; B60J7/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2448054A
Cited
US2443478A
Cited
US2496437A
Cited
US2623779A
Cited
US2733054A
Cited
US2747929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |