US2801009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter having outwardly extending pleats
Assignee: Motors Liquidation Co
•
Filing: 1954-02-10
•
Granted: 1957-07-30
•
Expires: 1974-02-10
Abstract
No abstract record available.
Inventors
- 👤 Roy L Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:25
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D2201/00; B01D2201/04; B01D2201/0407
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2189704A
Cited
US2395449A
Cited
GB588991A
Cited
US2627350A
Cited
US2689652A
Cited
US2675127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |