Patent US3447830A successfully refreshed from Google Patents.
US3447830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable camper canopy for pickup trucks
Assignee: ALFRED G WILLSON
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Filing: 1967-01-13
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Granted: 1969-06-03
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Expires: 1987-01-13
Abstract
No abstract record available.
Inventors
- 👤 Alfred G Willson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:11
CPC Classifications
B; B60; B60J; B60J7/00; B60J7/08; B60J7/16; B60J7/1607; B60J7/1614; B60P; B60P3/00; B60P3/32; B60P3/34; B62; B62D; B62D33/00; B62D33/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |