US3494334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine exhaust systems
Assignee: Brunswick Corp
•
Filing: 1968-03-14
•
Granted: 1970-02-10
•
Expires: 1988-03-14
Abstract
No abstract record available.
Inventors
- 👤 Robert T Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:21
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/10; F02; F02B; F02B27/00; F02B27/04; F02B61/00; F02B61/04; F02B61/045; F02F; F02F1/00; F02F1/18; F02F1/22; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319100A
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US988514A
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US1515523A
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US1834473A
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US2239262A
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US2390913A
Cited
GB571525A
Cited
GB572192A
Cited
US2643510A
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US2729204A
Cited
US2833255A
Cited
US3105474A
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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) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |