US2847819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible exhaust manifold system
Assignee: Motors Liquidation Co
•
Filing: 1952-11-07
•
Granted: 1958-08-19
•
Expires: 1972-11-07
Abstract
No abstract record available.
Inventors
- 👤 Lloyd E Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:38
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1805; F01N13/08; F01N13/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49398
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR869688A
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US2446631A
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US2455493A
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Cited
US2541973A
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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) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |