US3465413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing pleated filters
Assignee: Universal Filters Inc
•
Filing: 1966-10-25
•
Granted: 1969-09-09
•
Expires: 1986-10-25
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
2026-10-23 16:57
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/523; B01D29/00; B01D29/01; B01D29/012; B01D29/05; B01D29/07; B01D46/0001; B01D46/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4998
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190106769A
Cited
GB680211A
Cited
GB806109A
Cited
US2970699A
Cited
US3177637A
Cited
US3246457A
Cited
US3144315A
Cited
US3308958A
Cited
US3310177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |