Patent US2932157A successfully refreshed from Google Patents.
US2932157A
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Exhaust gas purifying attachment
Assignee: JAMES B ABBEY
•
Filing: 1955-08-22
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Granted: 1960-04-12
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Expires: 1975-08-22
Abstract
No abstract record available.
Inventors
- 👤 Jose L Villasenor
- 👤 Raul H Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:12
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/0807; F01N3/0828; F01N3/0842; F01N13/00; F01N13/009; F01N13/0097; F01N13/14; F01N2240/00; F01N2240/18; F01N2330/00; F01N2330/10; F01N3/10; F01N3/18; F01N3/20; F01N3/206; Y; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US758402A
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US873785A
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US1027469A
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US1179145A
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US1465904A
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US2024834A
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US2795103A
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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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |