US2626012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed control for paper filters
Assignee: SKF Automotive Products Inc
•
Filing: 1947-05-19
•
Granted: 1953-01-20
•
Expires: 1967-05-19
Abstract
No abstract record available.
Inventors
- 👤 Lawrence M Persons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:18
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/42; B01D46/44; B01D46/46; B01D46/88; F; F24; F24F; F24F13/00; F24F13/28; Y; Y10; Y10S; Y10S55/00; Y10S55/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1982639A
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US2422526A
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US2343732A
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US2362570A
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US2393014A
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US2451073A
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US2423316A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |