US2339703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coiled paper filter
Assignee: Motors Liquidation Co
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Filing: 1940-12-09
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Granted: 1944-01-18
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Expires: 1960-12-09
Abstract
No abstract record available.
Inventors
- 👤 Herbert G Kamrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:44
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/216; B01D27/00; B01D27/04; B01D27/08; B01D29/23; B01D29/232; B01D29/237; B01D29/50; B01D29/56; B01D29/58; B01D2201/00; B01D2201/18; B01D2201/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-01-17 | 1947-07-19 | 1948-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-01-17 | 1951-07-19 | 1952-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-01-17 | 1955-07-19 | 1956-01-18 | $7700.00 | Window Closed / Lapsed |