US2501767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler with internal side branch chamber
Assignee: Fluor Corp
•
Filing: 1948-03-01
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Granted: 1950-03-28
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Expires: 1968-03-01
Abstract
No abstract record available.
Inventors
- 👤 Fluor John Robert
- 👤 Foster M Stephens
- 👤 Bartels Arnold
- 👤 Newman Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:53
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/082; F01N1/00; F01N1/02; F01N1/08; F01N1/089; F01N2490/00; F01N2490/15; F01N2490/155
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) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |