US3389031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing pleated filters
Assignee: NILS O ROSAEN
•
Filing: 1966-03-07
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Granted: 1968-06-18
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Expires: 1986-03-07
Abstract
No abstract record available.
Inventors
- 👤 Nils O Rosaen
- 👤 Borje O Rosaen
- 👤 Oscar E Rosaen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:25
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D27/00; B01D27/04; B01D27/06; B01D29/00; B01D29/11; B01D29/114; B01D29/62; B01D29/66; B01D29/666; B01D29/88; B01D29/92; B01D29/94; B01D46/0001; B01D46/24; F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; F24; F24F; F24F13/00; F24F13/28; F24F8/00; F24F8/10; F24F8/108; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1016
Claims Analysis
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References Cited (Backward Citations)
CA599661A
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GB680211A
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GB750099A
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GB806109A
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FR1160074A
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US2970699A
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US3177637A
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US3308958A
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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) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |