Patent US3463149A successfully refreshed from Google Patents.
US3463149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nose air filter
Assignee: Individual
•
Filing: 1968-07-05
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Granted: 1969-08-26
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Expires: 1988-07-05
Abstract
No abstract record available.
Inventors
- 👤 Theodor Albu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:33
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/56; Y; Y10; Y10S; Y10S55/00; Y10S55/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1311461A
Cited
US831004A
Cited
GB367279A
Cited
US2162583A
Cited
US2395109A
Cited
GB588117A
Cited
US2431649A
Cited
US2620795A
Cited
US2660166A
Cited
FR1351537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |