Patent US2770313A successfully refreshed from Google Patents.
US2770313A
Expired / Lapsed
US
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Combination tail pipe and muffler
Assignee: International Motors LLC
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Filing: 1952-01-19
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Granted: 1956-11-13
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Expires: 1972-01-19
Abstract
No abstract record available.
Inventors
- 👤 Samuel G Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:20
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1805; B; B60; B60K; B60K13/00; B60K13/06; F01N1/00; F01N1/16; F01N1/22; F01N13/08; F01N2470/00; F01N2470/12; F01N2470/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1302300A
Cited
US1611475A
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US1947997A
Cited
FR704741A
Cited
DE650784C
Cited
GB435423A
Cited
US2583956A
Cited
US2565184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |