Patent US3201338A successfully refreshed from Google Patents.
US3201338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust purifying arrangement
Assignee: Individual
•
Filing: 1960-03-28
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Granted: 1965-08-17
•
Expires: 1980-03-28
Abstract
No abstract record available.
Inventors
- 👤 Pennington William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:50
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/0205; F01N1/00; F01N1/02; F01N1/04; F01N13/00; F01N13/009; F01N3/08; F01N3/10; F01N3/18; F01N3/20; F01N3/24; F01N3/26; F01N3/28; F01N3/2882; F01N3/2885; F01N3/30; F01N2490/00; F01N2490/15; F01N2490/155; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2679230A
Cited
US2742408A
Cited
US2745861A
Cited
US2784693A
Cited
US2854816A
Cited
US2937500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |