US2614654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive air vent filter attachment
Assignee: Individual
•
Filing: 1951-03-07
•
Granted: 1952-10-21
•
Expires: 1971-03-07
Abstract
No abstract record available.
Inventors
- 👤 Keith I Strinden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:45
CPC Classifications
B; B60; B60H; B60H3/00; B60H3/06; B60H3/0608; B60H3/0616; B60H2003/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE670408C
Cited
US2161728A
Cited
US2171797A
Cited
US2342872A
Cited
US2277552A
Cited
US2445392A
Cited
US2551932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |