Patent US3378099A successfully refreshed from Google Patents.
US3378099A
Expired / Lapsed
US
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Muffler and outlet tube for small internal combustion engines
Assignee: Briggs and Stratton Corp
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Filing: 1967-09-15
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Granted: 1968-04-16
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Expires: 1987-09-15
Abstract
No abstract record available.
Inventors
- 👤 Gordon Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:41
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N1/00; F01N1/08; F01N13/08; F01N13/082; F01N13/1844; F01N13/1855; F01N13/1888; F01N2450/00; F01N2450/20; F01N2450/22; F01N2450/24; F01N2470/00; F01N2470/02; F01N2470/18; F01N2490/00; F01N2490/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |