Patent US3027009A successfully refreshed from Google Patents.
US3027009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration equipment
Assignee: Permanent Filter Corp
•
Filing: 1959-01-28
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Granted: 1962-03-27
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Expires: 1979-01-28
Abstract
No abstract record available.
Inventors
- 👤 Harold A Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:11
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/045; B01D17/06; B01D17/08; B01D17/10; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/28; B01D2201/282; Y; Y10; Y10S; Y10S210/00; Y10S210/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |