US2748948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering device
Assignee: Bendix Aviation Corp
•
Filing: 1950-08-15
•
Granted: 1956-06-05
•
Expires: 1970-08-15
Abstract
No abstract record available.
Inventors
- 👤 Guy C Fricke
- 👤 Kasten Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:19
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/88; B01D29/90; B01D29/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2537897A
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US2547857A
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US2683536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |