US2882809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air duct for motor vehicles
Assignee: Individual
•
Filing: 1957-09-17
•
Granted: 1959-04-21
•
Expires: 1977-09-17
Abstract
No abstract record available.
Inventors
- 👤 Glenn J Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:08
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/24; B60H1/241; B60H1/246
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1870374A
Cited
US1966882A
Cited
US2045826A
Cited
US2241755A
Cited
US2382712A
Cited
US2493122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |