US3216181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system
Assignee: Individual
•
Filing: 1962-07-13
•
Granted: 1965-11-09
•
Expires: 1982-07-13
Abstract
No abstract record available.
Inventors
- 👤 Ivan H Carpenter
- 👤 Arthur J Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:58
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/04; 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)
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GB189618208A
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US661276A
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US965581A
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US1036713A
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US1401535A
Cited
US1421432A
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US1843999A
Cited
US1664333A
Cited
GB531864A
Cited
US3153682A
Cited
US3072214A
Cited
US3032968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |